Introductory Physics Worksheet With Answers - Mcas Review Packet #1 - Nnhs Page 11
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NNHS Introductory Physics: MCAS Review
Packet #1
1. Motion and Forces
Broad Concept: Newton’s laws of motion and gravitation describe and predict the motion of
most objects.
19.) The illustration below shows a 2-ton
20.) A 1500 kg car increases its speed by 2 m/s
elephant balancing on a tree stump.
for each second of travel. What is the net force
acting on the car?
A. 750 N
B. 1500 N
C. 3000 N
D. 6000 N
Which of the following statements must be
accurate?
A. The weight of the tree stump is greater than
2 tons.
B. A 4-ton force on the ground spreads out in
all directions.
C. The tree stump is exerting a 2-ton force
upward on the elephant.
D. The downward force on the ground under
the tree stump is 4 tons.
My Answer and Explanation:
My Answer and Explanation:
C. The elephant is at rest. The forces on
C. “Increases its speed by 2m/s for
the elephant must be balanced since he
each second” means that the car
isn’t accelerating. The upward force
has an acceleration of 2m/s/s.
must balance the elephant’s weight.
Newton’s Second Law says that
the net force acting on the car is
equal to its mass (1500 kg)
multiplied by it acceleration
(2m/s/s) so 1500*2 = 3000 N.
Correct Answer and Explanation:
Correct Answer and Explanation:
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