Motion-Chapter 2-Interactive Science

A teacher walks by a student's desk. The desk was in front of the teacher and is now behind the teacher. What term describes the change in the teacher's position compared to the desk?

• velocity

• relative motion

• relative position

• frame of reference

Which object requires the least amount of force to move it 5 m?

• golf ball

• soccer ball

• bowling ball

• table tennis ball

Two students push boxes with the same mass for 10 seconds. Which student moved her box a greater distance?

• the student who pushed with less force

• the student who had a lesser body mass

• the student who pushed with more force

• the student who had a greater body mass

On which object would the force of gravity be strongest?

• an apple

• a book

• a basketball

• a truck

A student wants to describe the velocity of a moving car. What information does the student need?

• speed and position

• speed and direction

• direction and position

• direction and relative motion

A train goes around a corner at the same speed it was traveling on a straight track. What is this an example of?

• speed

• acceleration

• relative motion

• frame of reference

A car travels 160 km in 2 hours. What is the average speed of the car?

• 0.01 km/hr

• 80 km/hr

• 160 km/hr

• 320 km/hr

Which of the following is not an example of an acceleration?

• A train slowing down to a stop.

• A train moving at the same speed going around a corner.

• A train moving at the same speed in the same direction.

• A train increasing its speed.

Describe what happens to the motion of a baseball after a pitcher throws it. Put the items in order from 1-3.

• 1. 1. The batter throws the ball.

  2. 2. The ball makes contact with the bat.

  3. 3. The ball changes direction and speed.

• 1. 1. The ball makes contact with the bat.

  2. 2. The batter throws the ball.

  3. 3. The ball changes direction and speed.

• 1. 1. The batter throws the ball.

  3. 2. The ball makes contact with the bat.

  4. 3. The ball changes direction and speed.

• 2. 1. The ball changes direction and speed.

  3. 2. The batter throws the ball.

  5. 3. The ball makes contact with the bat.

You are moving a heavy box across a room. You ask a friend t help you lift it. Why is it easier whey your friend helps?

• There is a greater amount of force when both people work together.

• There is less force when both people work together.

• It is not easier when they work together.