Physics Midterm EXAM Review Sheet term 1 PDF

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Physics midterm review...

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PHYSICS REVIEW SHEET MR. ANOBA NAME:______________________ CLASS:___________ DATE:_______ 1. A 60.-kilogram car travels clockwise in a horizontal circle of radius 10. meters at 5.0 meters per second. What is the magnitude of the centripetal force acting on the car ?

2. A horizontal 8.0-newton force applied to a 4.0-kilogram block on a frictionless table. What is the magnitude of the block's acceleration?

3. A 1.5-kilogram lab cart is accelerated uniformly from rest to a speed of 2.0 meters per second in 0.50 second. What is the magnitude of the force producing this acceleration? 4. What gravitational force does a 500-kg lead sphere exert on an identical sphere 5.0 m away?

5. What is the gravitational attraction between an 80-kg man and a 50-kg woman who are 10.0 m apart? 6. The acceleration due to gravity on the surface of planet X is 19.6 m/s2. If an object on the surface of this planet weighs 900 N, what is the mass of the object?

. 7. The accompanying graph represents the velocity of an object traveling in a straight line as a function of time. Determine the magnitude of the total displacement of the object at the end of the first 6.0 seconds.

8. A golf ball is propelled with an initial velocity of 60. meters per second at 37o above the horizontal. What is the horizontal component of the golf ball's initial velocity ?

9. A child walks 5.0 meters north, then 4.0 meters east, and finally 2.0 meters south. What is the magnitude of the resultant displacement of the child after the entire walk?

10. A 3.0 –kg cart moving due East at 4.0 m/s collides with a 6.0 –kg cart moving due West. The carts stick together and come to rest after the collision. Determine the initial speed of the 6.0-kg cart.

11. What is the magnitude of the velocity of a 30-kg object that has a momentum of 150 kg.m/s?

12. .A force of 20-N towards the right is exerted on a steel crate initially moving to the right on a horizontal steel floor. The crate weighs 50 N. A. Draw and label all the forces acting on the crate.

b. Calculate the magnitude of the frictional force between the crate and the floor.

13. A motor rated at 100 watts accelerates an object along a horizontal – frictionless surface with an average speed of 4 m/s . What force is supplied by the motor in the direction of motion?

14.An electric motor lifts a 10-kg mass 100 meters in 10 seconds. What is the power developed by the motor?

15. A motor used 120 watts of power to raise a 15-N object in 5 seconds. Through what vertical distance was the object raised?

16. A 2.0-kg block sliding down a ramp from a height of 3.0 m above the ground reaches the ground with a kinetic energy of 50- Joules. What is the total work done by friction on the block as it slides down the ramp? 17. The accompanying table lists the mass and speed of each of four objects. Calculate the kinetic energy of each object.

18. An object moving at a constant speed of 25 meters per second possesses 450 joules of kinetic energy. What is the object's mass?

19. During a 5.0 second interval, an object’s velocity changes from 35 m/s East to 25 m/s East. Determine the magnitude and direction of the object’s acceleration.

20. A spring has a spring constant of 120 Newtons per meter. How much potential energy is stored in the spring as it is stretched 0.20 meter?...