EPS Final
An object is pulled northward with a force of 10 N and southward with a force of 15 N. The magnitude of the net force on the object is
5 N
A stone is thrown horizontally from the top of a cliff. One second after it has left your hand its vertical distance below the cliff is
5 m
A heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object reaches the ground
at the same time as the lighter object
Whenever the net force on an object is zero, its acceleration
is zero
A "weightless" astronaut in an orbiting shuttle is
like the shuttle, pulled by Earth's gravitation
A kilogram is a measure of an object's
mass
Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has the same
none of the choices
The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. These twice-as-high apples, for the same mass, have
practically the same weight
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
same for each
In order to catch a ball, a baseball player extends the hand forward before impact with the ball and then lets it ride backward in the direction of the ball's motion upon impact. Doing this reduces the force of impact on the players hand principally because the
time of impact is increased
As an object freely falls, its
velocity increases
A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force required to keep the puck sliding at constant velocity is
0 N
The gain in speed each second for a freely falling object on earth is about
10 m/s
Exert 100 J in 50 s and your power output is
2 W
A 3000 N bear grasping a vertical tree slides down at constant velocity. The friction force between the tree and the bear is
3000N
The impulse-momentum relationship is a direct result of
Newton's second law
A much larger Mack truck and a Volkswagen traveling at the same speed have a head-on collision. The vehicle to undergo the greatest change in velocity will be the
both the same
The two measurements necessary for calculating average speed are
distance and time
A truck is moving at constant velocity. Inside the storage compartment, a rock is dropped from the midpoint of the ceiling and strikes the floor below. The rock hits the floor
exactly below the midpoint of the ceiling
In each second of fall on earth, the distance a freely falling object will fall is
increasing
