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20 questions
Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.
eventually stop since all objects ultimately "lose their steam"
eventually stop as its inertia slowly becomes used up
continue in motion with the same speed and direction
either a, b, or c -- depending on whether the astronaut continues to push it
List the objects in order from least to greatest inertia.
CDBA
ABCD
BCDA
CBAD
Inertia is the tendency of an object to resist a change in its ___________.
temperature
shape
size
motion
What is the relationship between heavy objects and inertia?
Only heavy objects have inertia.
Heavy objects have more inertia.
Heavy objects have less inertia.
Heavy objects have no inertia.
Diagram 3 shows a cat chasing a rat. The inertia of the cat is bigger than the rat because.
The size of the cat is bigger than the rat
The length of the cat is more than the rat
The mass of the cat is bigger than the rat
Which of the objects listed below have the greatest inertia?
A 500 kg object that is not moving.
A 300 kg object that is not moving on the Moon.
A 250 kg object moving at 25 m/s.
A 700 kg object moving at 3 m/s.
Seat belt is needed for safety purpose in a vehicle. What is the use of the seat belt?
To increase the effect of inertia
To reduce the effect of inertia
To increase the effect of momentum
To decrease the effect of momentum
Which phenomenon shows the effect of inertia on a moving object?
A racing car can go faster than an ordinary car
An aeroplane can fly higher than a helicopter
A smaller car takes shorter time to stop the car completely compare to a lorry
Bigger effect on the small vehicle in an accident
Which of the following can reduce the effect of inertia in an accident?
Install a long car bumper
Install air bag
Drive a vehicle with a long crumple zones
Drive a higher car
Which action increases the inertia?
Use a rougher card /
Use a smooth card /
Pull the card with greater force /
Change the coin to a heavier coin /
Which has the MOST inertia?
Which one has the LEAST inertia?
Who would cause more damage when leaping over a small building?
Diagram shows a man jerking a table cloth. The glass remain on the table because of inertia. Which action increase the inertia ?
Use a rougher cloth
Use a smoother cloth
Pull the cloth with greater force
Fill the glass with more water.
When a car moving with a constant speed suddenly stops, the driver in the car continues to _________ due to ________
be in the state of rest, inertia
move in the direction of the motion of the car, inertia
move in the direction that is opposite the motion of the car, the balanced force
be in the state of rest, the balanced force
When a car suddenly moves from its state of rest, the driver in the car ……………….. due to ………………...
remains in the state of rest, inertia
moves in the direction of the motion of the car, the balanced force
moves in the direction opposite the motion of the car, the balanced force
moves in the direction opposite the motion of the car, inertia
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