Integrated Science Chapter 2
A car accelerates from rest at 2 m/s^2. What is its speed 3 s after the car starts moving?
6 m/s
What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s
0 m/s
If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by about
10 m/s
A ball is thrown 125 m upward and then falls the same distance back to the Earth. Neglecting air resistance, its total time in the air is about
10 s
A car accelerates at 2 m/s^2. Assuming the car starts from rest, how far will it travel in 10 s
100 m
Ten seconds after starting from rest, a freely falling object on Earth will have a speed of about
100 m/s
The average speed of a horse that gallops a distance of 10 km in a time of 30 min is
20 km/h
If a baseball being thrown goes from zero too 30 m/s in 0.1 s, what is its average acceleration
300 m/s^2
One-half second after starting from rest, a freely falling object will have a speed of about
5 m/s
Starting from rest, the distance a freely falling object will fall in 10 s is about
500 m
An object is in free fall. At one instant, it travels at a speed of 50 m/s. Exactly 1 s later, its speed us about
60 m/s
The scientist to first introduce the concept of inertia was
Galileo
Hang from a pair of gym rings and the upward support forces of the rings will always
add up to equal your weight
An object in mechanical equilibrium is an object A. at rest B. having no acceleration C. moving with constant velocity D. all of the above
all of the above
When a loaf of bread rises, its density
decreases
Whereas Aristotle relied on logic in explaining nature, Galileo relied on
experiment
In each second of fall, the distance a freely falling object will fall is
increasing
Your weight is
the gravitational attraction between you and the Earth
In which of the following locations would a chunk of gold weighing 1 N have the largest mass the earth, Jupiter, the moon
the moon
An object weighs 30 N on Earth. A second object weighs 30 N on the Moon. Which has the greater mass?
the one on the moon
Which direction does a table push a book resting on it
up
As an object freely falls, its
velocity increases
The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is
10 N
The gain in speed each second for a free falling object is about
10 m/s
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 of the object is
5 N
When you stand at rest on a pair of bathroom scales, the readings on the scales will always
add to equal your weight
A pot falls from a ledge and hits the ground 45 m below. The speed with which it hits the ground is about
30 m/s
A 300-kg bear grasping a vertical tree slides down at a constant velocity. The friction force between the tree anad the bear is
3000 N
It takes 6 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft
about 180 m
Disregarding air resistance, objects fall at constant
acceleration
Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much A. mass B. inertia C. volume D. all of the above
all of the above
Which has zero acceleration? A. an object moving at constant velocity B. an object at rest C .an object in mechanical equilibrium D. all of the above
all of the above
The two measurements necessary for calculating average speed are
distance and time
One object has twice as much mass as another object, and also has twice as much
inertia
When a basketball player jumps to make a shot, once his or her feet are off the ground, the jumper's acceleration
is g, no more, no less
Which has the greater mass between an automobile battery or a king-size pillow
king-sized pillow
A kilogram is a measure of an object's
mass
Density is the rate of
mass to volume
Where is friction most evident on the road, in the atmosphere, in a cup of coffee, everywhere
on the road
Compared with the mass of a certain object on Earth, the mass of the same object on the moon is
the same