Conceptual Physics Chapter 5 Newton's Second Law of Motion
Terms in this set (15)
Objects move only when a force is exerted
The acceleration of an object is inversely proportional to the net force acting on it
Air resistance is caused by friction between the air and an object moving through the air
Pressure is defined as the force one object exerts on another object
The speed of an object dropped in air will continue to increase without limit until it strikes the ground
The acceleration produced by a net force on an object is
directly proportional to the magnitude of the net force, in the same direction as the net force, inversely proportional to the mass of the object
If the force acting on a cart doubles, what happens to the cart's acceleration?
A girl whose weight is 200 N hangs from a bar supported by two strands of rope. What is the tension in each strand?
Pressure is defined as
Force per unit area
Which of the following would exert the most pressure on the ground?
A woman standing in high heel shoes
A tennis ball and a solid steel ball the same size are dropped at the same time. Which ball has the greater force acting on it?
The stell ball
A tennis ball and a solid steel ball the same size are dropeed at the same time. In the absence of air resistance, which has the greater acceleration?
Nonsense! They both have the same acceleration
As he falls from a high flying stationary helicopter, Bronco's velocity increases and his acceleration
Spud jumps upward raising his center of gravity 1.25 m off the floor. His up time and down time (hang time) for this feat is
about 1 second
If Aunt Minnie throws a rock downward, and air resistance is negligible, then the acceleration of the rock compared to being dropped is
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