The ram on a crane uses the force of kinetic energy to push a spike into the ground. From which position should the ram be released to have the greatest kinetic energy when it hits the spike?
Some new cars use special braking systems to recover energy when the brakes are applied. This energy is stored in special batteries and is used to power the electric motor. What type of energy are the brakes storing as they slow down the car?
During an investigation on energy, Seth rolls marbles of four different masses down a ramp. Which size marble will have the greatest kinetic energy when it reaches the bottom of the ramp?
Look at the drawing below of a bouncing ball. Which correctly identifies the sequence of the types of energy shown in the drawing?
A crane uses a pulley system to make work easier. Which statement BEST explains how the pulley system in a crane makes work easier?
Which is most likely needed when describing the change in position of an object?
A brick is resting on a level, smooth surface. When a student applies a horizontal force of 5 N to the brick, the force of friction on the brick is also 5 N. Which statement BEST describes the effect of these two forces on the brick?
Which statement best explains why a car that is rolling on a level surface will eventually come to a stop?
When astronauts walked on the Moon, they used weighted boots to help them walk due to the lower gravitational pull. What difference between Earth and the Moon accounts for the difference in gravity?
Which of these is an example of Newton’s first law of motion?
Two toy cars are traveling on a track. Thirteen minutes after they start, how do the speeds of the cars compare?
This is a graph of the motion of a small boat traveling at a constant speed. How far will the boat travel in 15 hours?
This graph shows the motion of an object as it moves away from a point and then back to its starting point. Which graph shows the total distance traveled by the object?
Four students went on a 3-kilomater hike. Each student was hiking a different speed. The distance the students hiked during the first 30 minutes is shown in each graph. If each student continued at the same speed, which graph shows the hiker that finished the 3-kilometer hike first?
The graph shows the motion of a student walking at different speeds. During which time interval does the student walk with a negative acceleration?
Which graph could represent a car moving at a constant speed in a forward direction?