# General Physics Midterm Review ```Physics Midterm Review
These are a few sample questions! Be sure to also study all of your notes.
Be sure to review the following:
 Physics Vocabulary &amp; Conversions
 One-Dimensional Motion
 Two-Dimensional Motion
 Forces (including Centripetal Force)
1.
Jennifer walks 65 meters west and stops. She then turns around and heads east for 20 meters. What is her displacement?
(45 m)
2.
A car accelerates from rest to a speed of 35 miles an hour in only 6 seconds. What is the acceleration? (2.6 m/s 2)
3.
How long will it take an object accelerating from 20 m/s at a rate of 7 m/s2 to reach a speed of 65 m/s? (6.4 sec)
4.
A ball is thrown horizontally from a point 50 m above the ground. How long was the ball in the air?
(3.2 sec)
5.
A missile launches at a velocity of 45.0 m/s at an angle of 17.0&deg; to the horizontal. What is the maximum height the missile
attains?
(8.5 m)
6.
A 3 kg box is pushed on a horizontal surface. It moves on the surface with an acceleration of 0.27 m/s 2. Calculate the applied
force that must be acting on the box.
(0.81 N)
7.
A sign with a mass of 250 kg hangs by a single rope. What is the tension in the string?
(2,450 N)
8.
A 1,150 kg car is parked on a street with an incline of 2.5. What is the frictional force needed to keep the car in place?
(492 N)
9.
Using the information in #8, determine the coefficient of friction.
(0.044)
10. Using the information in #8, calculate the acceleration of the car if the frictional force was cut in half.
(0.21 m/s/s)
11. A projectile is launched off a 25 m tall cliff with a velocity of 16 m/s at an angle of 32&deg; from the horizontal. Determine how long
the projectile is in air and where it will land.
(3.3 seconds, 45 m)
12. You are pushing an 8 kg box at a constant speed across a horizontal surface. You push with a force of 12 N which makes an
angle of 36&deg; with the horizontal. Determine the coefficient of friction.
(0.11)
13. Using the information in #12, determine the acceleration of the stroller if the coefficient of friction was half.
(0.63 m/s/s)
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