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Student Name_________________________________________ Date____________
MCAS review- forces and Newton’s Laws
1. The diagram below shows the forces acting on a rock.
Notes:
The weight of the rock is 76 N. An
upward force of 106 N is exerted on
the rock. What is the net force
acting on the rock?
A. 30 N upward
B. 76 N downward
C. 106 N upward
D. 182 N downward
2. A ball has a mass of 0.1 kg and an initial velocity of 20 m/s. The ball is given an
acceleration of 30 m/s2 for 5 s.
What is the net force on the ball during acceleration?
A. 0 N
Notes:
B. 3 N
C. 10 N
D. 15 N
3. A 1500 kg car has an applied forward
force of 5000 N and experiences an air
resistance of 1250 N.
Notes:
What is the car’s acceleration?
A. 2.5 m/s2
B. 3.3 m/s2
C. 4.2 m/s2
D. 9.8 m/s2
4. A hockey player swings her hockey stick and strikes a puck. According to
Newton's third law of motion, which of the following is a reaction to the stick
pushing on the puck?
Notes:
A. the puck pushing on the stick
B. the stick pushing on the player
C. the player pushing on the stick
D. the puck pushing on the player
5. A cart with a mass of 5 kg rests on a floor next to a wall, as shown in the
diagram below.
Notes:
A person pushes on the cart to the left toward the wall with a force of 100 N.
Which of the following statements is true in this situation
A. The wall does not push on the cart.
B. The floor pushes 100 N up on the cart.
C. The cart pushes 100 N down on the floor.
D. The wall pushes 100 N to the right on the cart.
6. A performer pulls a tablecloth out from under a complete set of dinnerware as
shown in the illustration below.
Notes:
Which of the following best explains the performer’s success at leaving all the
dinnerware on the table?
A. the inertia of the dinnerware
B. the large mass of the tablecloth
C. the placement of the dinnerware
D. the rough material of the tablecloth
Name______________________________________________
Forces and Newton’s Laws MCAS Review Homework:
1. The forces acting on a skateboarder moving at a constant velocity along a
sidewalk are shown in the figure below.
Normal force = 600 N
Weight of skateboarder = 600 N
Which of the following is the net force on the skateboarder?
A. 0 N
Show calculations Here!:
B. 70 N
C. 670 N
D. 1270 N
2. The tendency of a stationary object to resist being put into motion is known as
A. acceleration.
B. inertia.
C. weight.
D. velocity.
3. An upward force of 150 N is applied to a box weighing 70 N. Which of the
following is the free-body force diagram for this situation?
70
N
22
0
N
80
N
70
N
150 N
70 N
4. The illustration below shows a 2-ton elephant balancing on a tree stump.
Which of the following statements must be
accurate?
Which of Newton’s Laws applies to this question?
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.
5. Four students push on a block of wood with the forces shown in the diagram
below. Assume friction is negligible.
The block slides horizontally. What is the net force acting on the block of wood?
A. 3 N to the left
B. 8 N to the left
Show Calculations Here:
C. 11 N to the right
D. 25 N to the right
6. Two students are in-line skating. The diagram below shows student S pushing
student T. Student S has a mass of 60 kg, and student T has a mass of 40 kg.
Student S is pushing student T in a straight line with a force equal to the friction
on student T’s skates. Which of the following must happen if student S continues
to push student T with the same force?
A. Student T will lose his balance.
B. Student T will travel in a circle.
C. Student T will move at a constant velocity.
D. Student T will move at a constant acceleration.
Which of Newton’s Laws applies to this question?