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Physics & Astronomy
Study Set
Physics for Scientists and Engineers Study Set 2
Quiz 5: Force and Motion
Path 4
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Question 1
Multiple Choice
A dog is standing in the bed of a pickup truck. The bed is coated with ice, causing the force of friction between the dog and the truck to be zero. The truck is initially at rest, and then accelerates to the right, moving along a flat road. As seen from a stationary observer (watching the truck move to the right) , the dog
Question 2
Multiple Choice
An 1100-kg car traveling at 27.0 m/s starts to slow down and comes to a complete stop in 578 m. What is the magnitude of the average braking force acting on the car?
Question 3
Multiple Choice
Point P in the figure indicates the position of an object traveling at constant speed clockwise around the circle. Which arrow best represent the direction the object would travel if the net external force on it were suddenly reduced to zero?
Question 4
Multiple Choice
A stalled car is being pushed up a hill at constant velocity by three people. The net force on the car is
Question 5
Multiple Choice
If a 5.0 kg box is pulled simultaneously by a 10.0 N force and a 5.0 N force, then its acceleration must be
Question 6
Multiple Choice
Suppose the force of the air drag on an object is proportional to the speed of the object and in the direction opposite the object's velocity. If you throw an object upward, the magnitude of its acceleration is greatest
Question 7
Multiple Choice
A woman is straining to lift a large crate, without success because it is too heavy. We denote the forces on the crate as follows: P is the upward force the woman exerts on the crate, C is the vertical contact force exerted on the crate by the floor, and W is the weight of the crate. How are the magnitudes of these forces related while the woman is trying unsuccessfully to lift the crate?
Question 8
Multiple Choice
An object is moving forward with a constant velocity. Which statement about this object MUST be true?
Question 9
True/False
A car is being towed at constant velocity on a horizontal road using a horizontal chain. The tension in the chain must be equal to the weight of the car in order to maintain constant velocity.
Question 10
Multiple Choice
A ball is tossed vertically upward. When it reaches its highest point (before falling back downward)
Question 11
Multiple Choice
Suppose you are playing hockey on a new-age ice surface for which there is no friction between the ice and the hockey puck. You wind up and hit the puck as hard as you can. After the puck loses contact with your stick, the puck will