Force and Motion - Robert Purcell | Library

Instructions

This will need to be checked as practice for the assessment on Thursday.

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Name_______ Period _______ 

1

A student made a ramp by placing one end of a piece of wood on top of three textbooks. He rolled a toy truck down the ramp three times, measured the speed, and recorded the results in a data table. The teacher asked the student to increase the kinetic energy of the truck. Which of these should the student do to meet the criteria?

1

A team of engineers is developing a new waterslide for a theme park. The riders of the slide will climb several flights of steps to reach the top of the slide and will sit in a round inner tube as they slide down. The engineers are testing a computer simulation to measure the kinetic energy that the riders will have on the slide. The kinetic energy will be based on the potential, or stored, energy and will depend on mass and speed. The engineers want to develop a way to transfer the most kinetic energy to the riders to make their trip down the slide as fast as possible.

1

Which puck(s) experienced the strongest force when hit (the green puck has less mass than the black and purple which have equal mass)? How do you know? (All three changed velocity by the same amount)

1

A student makes a balloon cart to investigate how combined forces create motion. The student creates a simple cart by attaching wheels to a small piece of cardboard. The student attaches a straw with a balloon on one end so that any air coming out of the balloon flows in one direction. The student blows up the balloon, sets the cart on the tabletop, and lets go. Air flows out of the balloon and through the straw, but the cart does not move. Which of these explains why the car does not move?

1

The shopping cart had more mass in Crash 2 than it did in Crash 1. In which crash did the skateboard experience a stronger force? Why? (Both carts experienced the SAME change in velocity)

1

Some friends are playing a game called croquet. One player uses their mallet to hit their ball into another ball. The first ball slows to a stop, and the second ball starts rolling. The friends come up with explanations to describe energy movement in the scenario. Which friend is correct?

1

A student is developing and testing a new design of a model car on a model track. She makes a graph to show the results of her test. How can the student develop a solution to increase the kinetic energy of the model car?

1

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters. Why did the block stop moving?

1

A Physical Education (gym) class is playing a game of soccer. During the game, the ball experiences a force of 0 newtons. Which statement explains what is most likely happening with the ball?

1

In which trial will Object B travel the fastest?

1

Two objects on the air hockey table are pushed toward each other. The objects are of equal mass. The sizes of the arrows are proportional to the acceleration. What is the most likely outcome of the collision?

1

Our team tested several materials. We showed that when Objects A and B collide, the force exerted by Object A on Object B is  __________  the force that Object B exerts on Object A.

1

We also found that the change in the motion of Object A or Object B depended on their __________and the force that is on it.

2

Students explain why they chose a specific material as a liner for the safety helmet. Which of the following best explains the physics behind choosing a specific material as a liner? (Select all that apply)