Directions: Choose the letter of the correct answer. Write the letter of your answer on a separate sheet of paper,
1. Rolling objects in an inclined plane move faster due to
A. friction
C. mass of an object
B.pressure
D. gravitational pull of the earth
2. Why is it difficult to climb up the stairs rather than to go down the stairs?
A. because you move upward
C. because you go with the gravity
B. because you move downward
D. because you go against the gravity
3. Which of the following movements is affected by gravity?
A. Car continuously roll down hills
C. Bicycle parked under the tree
B. Fruits fall off in the ground
D. Allen's bike stop when he press on the brake
4 What do you call the pull of attraction towards the center of the earth?
A. force
C. kinetic friction
B. gravity
D. frictional force
5 What force is acting on falling leaves?
A. friction
C. gravity
B. motion
D. tension