Exam 3: Newtons Laws of Motion

A bullet is dropped from the top of the Empire State Building while another bullet is fired downward from the same location. Neglecting air resistance, acceleration is greatest for the

Neglecting friction, a large block of ice and a small block of ice start sliding down an incline together. The heavier block will get to the bottom

A force is a vector quantity because it has both

A heavy block at rest is suspended by a vertical rope. When the block is accelerated upward by the rope, the rope tension

An object is propelled along a straight-line path by a force. If the net force were doubled, its acceleration would

A ball is thrown vertically into the air. Because of air resistance, its time coming down compared to its time going up is

A 1-kg rock that weighs 10 N is thrown straight upward at 20 m/s. Neglecting air resistance, the net force that acts on it when it is half way to the top of its path is

A karate chop delivers a blow of 3000 N to a board that breaks. The force that acts on the hand during this event is actually

A falling boulder experiences a force, which is responsible for its acceleration. What is the reaction to this force? How can this question be better phrased?

If the mass of an object does not change, a constant net force on the object produces constant

An object released from rest on another planet requires 1 s to fall a distance of 6 m. What is the acceleration in meters per second squared due to gravity on this planet?

Strange as it may seem, it is just as hard to accelerate a car on the Moon as it is to accelerate the same car on Earth. This is because the

When an object falls through the air, its velocity increases and its acceleration

A piece of rope is pulled by two people in a tug-of-war. Each pulls with 400 N of force. What is the tension in the rope?

A 100-kg automobile enters a freeway onramp at 20 m/s and accelerates uniformly up to 40 m/s in a time of 10 s. How far does the automobile travel during that time?

The Earth pulls on the Moon. Similarly, the Moon pulls on the Earth, evidence that

When a woman stands at rest with two feet on a scale, the scale reads 500 N. When she gently lifts one foot, the scale reads

The attraction of a person's body toward Earth is called weight. The reaction to this force is

If you drop an object, it will accelerate downward at a rate of about 10 m/s2. If you instead throw it downward, its acceleration (in the absence of air resistance)will be

A block is dragged without acceleration in a straight-line path across a level surface by a force of 6 N. What is the force of friction between the block and the surface?