Physics Final Exam MC Questions

● An object is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s2. What is the maximum height reached by the object? 48m ● An object is moving in a straight line with constant acceleration. Initially, it is travelling at 16 m/s. Three seconds later it is travelling at 10 m/s. How far does it move during this time? 39m ● An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s2. How much time does it take for the complete increase in speed? 4.0s ● A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is coming down. Both its velocity and its acceleration point downward. ● Human reaction time is usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you catch it? at least 4.9cm ● A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. What is the average speed of the motorist for this trip? 89km/h ● The area under a curve in a velocity versus time graph gives the displacement ● An object is moving with constant non-zero acceleration in the +x axis. The velocity versus time graph of this object is a straight line making an angle with the time axis ● A cart with an initial velocity of 5.0 m/s experiences a constant acceleration of 2.0 m/s2. What is the cart's displacement during the first 6.0 s of its motion? 66m ● A boat can move at 30 km/h in still water. How long will it take to move 12 km upstream in a river flowing 6.0 km/h? 30min ● A person on a scale rides in an elevator. If the mass of the person is 60.0 kg and the elevator accelerates downward with an acceleration of 4.90 m/s2, what is the reading on the scale? 294N ● Who has a greater weight to mass ratio, a person weighing 400 N or a person weighing 600 N? Neither; their ratios are the same ● A stack of books rests on a level frictionless surface. A force F acts on the stack, and it accelerates at 3.0 m/s2. A 1.0 kg book is then added to the stack. The same force is applied, and now the stack accelerates at 2.0 m/s2. What was the mass of the original stack? 2.0kg ● Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body? 16N ● A 10-kg box sitting on a horizontal surface is pulled by a 5.0-N force. A 3.0-N friction force retards the motion. What is the acceleration of the object? 0.20m/s^2 ● A packing crate slides down an inclined ramp at a constant velocity. Thus we can deduce that… a frictional force acting on it ● When you sit on a chair, the resultant force on you is… zero Downloaded by Kevin Lang (dilas34153@fesgrid.com) lOMoARcPSD|31076631