If an airplane travels 500km due north in 1 hour, what is the velocity?

if it travels 250 km due to north in half an hour, what is the velocity?

A ball released to roll down one plane would roll-up the other to reach nearly?

______________ formulated the theory of moving earth

If the force of gravity suddenly stopped acting on planets, they would?

The unit of mass is

The unit of weight is

Weight is force due to

The weight of a 10 kg object is

The mass of a sheep that weights 125 N is

The force required to maintain an object at constant speed in a free space is equals to

Compared to its mass on earth, the mass of a 60 kg object on the moon is

compared to the weight on earth, a 60kg object on the moon will weight

What is friction?

How do you convert mass into weight?

Which has more mass, a kilogram of cotton or a kilogram of iron?

What is equilibrium?

Define inertia

Mass

Weight

An object weighs 50 N on earth. A second object weights 50 N on the moon. Which has greater mass?

The name of the astronomer who firstly published a statement on the earth revolves around the sun is Galileo

Friction refers to the force between two surfaces that are sliding past each other

A force can be simply defined as a push or a pull

The force due to gravity acting on an object is mass

If a hockey puck were to slide on a perfectly frictionless surface, it will eventually slow down because of its inertia

The SI unit of mass is the Newton

An astronaut weighs the same on the Earth as in space

Inertia is the property that every object has, inertia resists changes in an objects state of motion

When an object reaches terminal velocity, its acceleration is

Acceleration is inversely proportional to

Acceleration is _____________proportional to the net force

A rock is thrown vertically into the air. At the very top of its trajectory the net force on it is

An apple weights 1 N. The net force on the apple when it is in free fall is

A boy pulls on a 20 kg wagon with a constant force of 50 N. What is he wagon's acceleration?

If the force acting on an object doubles, the object's acceleration

A book weighs 8 N. When held at rest in your hands, the net force on the book is

A force of 6 N accelerates a mass of 6 kg at the rate of 1 m/s². The acceleration of a mass of 12 kg acted upon by a force of 12 N is

The unit of force is

The unit of mass is

The unit of weight is

At the terminal speed, the force of air resistance balances the ________________ of the object

Acceleration equals net force divided by

The acceleration of all objects in free fall is equal to

When the mass of an object doubles, its acceleration

The terminal speed for a person parachuting is about

A 10 N falling object encounters 2 N of air resistance. The magnitude of the force acting on the object is

You pull horizontally on a 50 kg crate with a force of 450 N and the friction force on the crate is 250 N. What is its acceleration?

A jet has a mass of 40,000 kg. The thrust for each four engines is 20,000 N. What is the jet's acceleration

What is terminal speed (or velocity)?

A tennis ball and a steel ball will accelerate at the same rate in the absence of air resistance. Why?

Forces always occur in

A person is attached towards the center of earth by a 600N gravitational force. The force with which Earth is attracted toward the person is

Bronco the skydiver falls toward Earth. The attraction of Earth on Bronco pulls him down. The reaction to this force is

Nellie Newton holds an apple in her hand. If action is earth pulling on the apple, then reaction is

A rocket is able to accelerate in the vacuum of space when it fires its engines. The force that propels the rocket is the force

A force is exerted on the tires of a car to accelerate the car along the road. The force is exerted by

A boy weights 450 N sits on the floor. The boy exerts a force on the floor of

An object is attracted towards the center of the earth by a 50 N gravitational force. The force with which the earth is attracted toward the object is

A car accelerates along a road. The force that moves the car is exerted by

If you hit a wall with a force of 200N, how much force is exerted on you?

When you walk along a floor, what pushes you along?

A player catches a ball. The action force is the impact of the ball against the player's glove. What is the reaction to this force?

A 60kg person on a line pushes against a wall with a force of 30 N and recoils. What acceleration does that person experiences?

Whenever one object exerts a force on a second object, the second object exerts a________ and _________force on the first object. This is called Newton's____________

Action and ______________ forces act simultaneously

Reaction forces occur slightly after the action force is applied

Action and reaction forces are equal and opposite only under certain conditions

In order to make a cart move forward, a horse must pull harder on the cart than the cart pulls on the horse

A bicycle and a parked car have a head-on collision. The force of impact is greater on the bicycle

A boy pulls on a 20kg wagon with a constant force of 50 N. What is the wagon's acceleration?

A sailboat and its crew have a combined mass of 655kg. If the sailboat experiences an unbalanced force of 895 N, pushing it forward, what is the sailboat's acceleration?

A car starts from rest and after 10 seconds it is moving at 60m/s. What is the car's average acceleration?

Find your average speed if you run 50 m in 10s

How far will you travel if you maintain an average speed of 10m/s for 40s? instantaneous speed problem d=v*t

What is the acceleration of a ball that starts from rest and rolls down a ramp, gaining a speed of 25m/s in 5s?

What is the acceleration of a cart that goes from rest to a speed of 50m/s in 10s?

An apple drops from a tree and hits the ground in 1.5s. What is its speed just before it hits the ground? instantaneous speed problem v=g*t

What is the net force acting on an object traveling in a straight line with constant speed?

Distinguish between distance and displacement

A ball is thrown straight up. What will it be its instantaneous speed and acceleration at the top of its trajectory?

What does the slope on a displacement-versus-time graph represent?

What does the slope on a velocity-versus-time graph represent?

Calculate the instantaneous speed and distance fallen for an object that falls freely from rest for 8 second? distance= 1/2 gt² & inst speed v=gt

Find the speed required to throw a ball straight up and have it return 6 seconds later

A ball is thrown straight up at a speed of 20 m/s.

a) calculate the time it takes to return to is starting point

b) calculate the displacement

A car accelerates at 4m/s². Assuming the car starts from rest, how much time does it need to travel a distance of 32m? use d=1/2at²

A 10 N falling object encounters 2 N of air resistance. The magnitude of the force acting on the object is (opposite forces are always subtracted)

A 15 N force and a 50 N force act on an object in opposite directions. what is the net force on the object?

Calculate the mass of a box that weighs 150N (w=mg)

If Joe rides south on his bike in a straight line for 10s with an average speed of 20m/s, how far has he ridden?

During a race on level ground, Andra runs with an average velocity of 6.02m/s to the east. What distance does Andra cover in 137 seconds?

Define scalar and vector quantities with examples

Calculate the weight of a 30kg box

Calculate the mass of a 500 N box

A car accelerates at 6m/s². assuming the car starts from rest, how much time does it need to travel a distance of 75m? d=1/2at²

A truck is driven 50 kilometers during the first 0.50 hour of travel, 25 kilometers during the next 0.25 hour, and 40 kilometers in the final 0.50 hour. What is the truck's average speed for the entire trips? (add all the given distances, then add the hours, divide d/t)

which object has a greater inertia?

Does a speedometer of a car read instantaneous speed?

Does the speedometer of a car measure the car's velocity?

A bus travels 280 km south along a straight path in 3 hours. The bus stops for 24 mins, then it travels 210 km south in 2.3 hours. How long does the the total trip last?

A bus travels 280 km south along a straight path in 3 hours. The bus stops for 24 mins, then it travels 210 km south in 2.3 hours. What is the average velocity for the total trip?

A car accelerates uniformly in a straight line from rest at the rest of 2.3 m/s². How long doe it take the car to travel 55m? (use d=1/2at²)