1. A ball is thrown straight up into the air with an initial kinetic energy of 20.0 J as it just leaves a student's hand. Its gravitational potential energy is zero at this same location. After 2.00 seconds of time, the final kinetic energy of the ball is zero. What is the gravitational potential energy of the ball at this final location?

A. 9.8 J

B. ZERO

C. 20.0 J

D. 10 J

2. A soccer ball flying through the air in free fall at some height above the ground has a kinetic energy of 5.00 J and a gravitational potential energy relative to the ground of 5.00 J. What is the total mechanical energy of the ball relative to the ground at this second location in SI units?

A. 5.0 J

B. 10 J

C. 0

3. A man goes for a walk starting at a position 2.00 meters from his house. He walks in a straight line and stops walking at a position that is 8.00 meters from his house. What is the displacement of the man for this journey?

A. 6.00 METERS

B. 8.00 METERS

C. 10.00 METERS

4. A student wants to drop a sphere from rest into free fall with the highest acceleration possible. The student can choose a sphere of mass 1 kg, 2 kg, or 3 kg. Which sphere should the student use?

A. the 1 kg sphere

B. the 2 kg sphere

C. the 3 kg sphere

D. it doesn't matter because they all have the same acceleration in free fall.

5. Given a block on a flat table. A horizontal force of 4.00 N pulls on the block horizontally for a distance of 2.00 m. What of these expressions equals the work done on the block in SI units?

A. 4.00 divided by 2.00

B. 4.00 x 2.00

C. 2.00 divided by 4.00

6. A student wants to drop a ball from some height so that it hits the floor with the largest kinetic energy possible. The student can drop from a height of 1 m, 2 m, or 3 m. From which height should the student drop the ball?

A. 1m

B. 2m

C. 3m

D. it doesn't matter, it's all the same

7. A student weighs a cup using an electronic balance as shown in the picture. The screen shows 2.87 g. If the student is recording this mass in grams then which of these values should be recorded on their datasheet?

A. 2.8

B. 2.87

C. 3