Quiz 1a

What happens to the acceleration when the object moves in constant velocity motion

• The acceleration increases

• There is constant acceleration

• No acceleration

• Acceleration reduces

• 9.8 m/s

• 19.6 m/s

• 29.4 m/s

• 0 m/s

Comparing A, B, and C which one is reaching the floor first if they throw the ball at the same time?

• A

• B

• C

• don't know

Comparing the balls B and C which one reaches the floor first if the ball is thrown at the same time?

• B

• C

• both of them

• don't know

What is the net force of an object at rest?

• Zero

• gravitational force

• potential force

• frictional force

What happens to the force of both balls after the collision

• No forces

• Bowling ball has greater force

• Both have the same force

• Pingpong ball has greater force

The change in kinetic energy can be described as

• Energy

• Momentum

• Work

• Force

What can be explained in this figure

• no work done

• Work done

• Force distributed among people

• Cooperation between team member

What is the centripetal force direction

• Toward the center of rotation

• toward the direction of motion

• on the left of the object

• on the right of object

• The kinetic energy remain similar

• The kinetic energy increases two times

• The kinetic energy increases four times

• The kinetic energy reduces two times