GINO PHYSICS REVIEW 3

When you look at the speedometer in a moving car, you can see the car's:
a. average distance traveled
b. instantaneous acceleration
c. average speed
d. instantaneous speed
e. average acceleration

d. instantaneous speed

Acceleration is defined as the change in:
a. time it takes to move from one place to anothr place
b. velocity of an object
d. distance divided by the time interval
d. velocity divided by the time interval
e. time it takes to move from one speed to another

d. velocity divided by the time interval

If a moving object changes the direction of its motion, which of these must also change?
a. mass of the object
b. speed of the object
c. weight of the object
d. velocity of the object

d. velocity of the object

Suppose you take a trip that covers 180 km and takes 3 hours to make. Your average speed is:
a. 30km/h
b. 60km/h
c.180km/h
d.360km/h
e.540km/h

e. 540 km/h

Henry performs an experiment using four balss with different masses but the same diameter. He drops the ball from a height of 4 meters. He notes the time each ball takes to reach the ground. Which variable has henry changed in his experiment?
a. mass of t

a. mass of the ball

A student dropped a quarter into a canyon. The quarter fell 20meters and took approximately 2 seconds to strike the ground. What was the approximate average speed of the quarter as it fell?
a. 10 m/s
b. 18m/s
c. 22m/s
d. 44m/s

a. 10 m/s

Estella wants to find her average speed during a bike ride. How should she find her average speed?
a. divide the distance she traveled by the time her ride took
b. divide the time her ride took by the distance she travled
c. multiply the distance she trav

a. divide the distance she traveled by the tme her ride took

One possible unit for speed is
a. miles per hour
b. meters per second
c. kilometers per hour
d. all of the above
e. none of the above

d. all of the above

A car is traveling at a speed of 36 km/h. It speeds up to 72 km/h in 5.0 seconds. What is the acceleration fo the car?
a. 2.0 m/s^2
b. 4.0m/s^2
c. 7.2m/s^2
d. 10m/s^2

c. 7.2m/s^2

Samantha is driving a car at a speed of 10m/s. She accelerates for 5 seconds, and her new speed is 15m/s. What is the acceleration of the car?
a. 1m/s^2
b. 2m/s^2
c. 3m/s^2
d. 5m/s^2

a. 1m/s^2

A train begins moving up a steep hill at a speed of 30m/s. It decelerates for 3 minutes until its speed reduces to 25m/s. Which of these is the approximate acceleration?
a. 36m/s^2
b. 0.139 m/s^2
c. -0.028m/s^2
d. -5m/s^2

c. -0.028m/s^2

A ball is thrown straight up. At the top of its path its instaneous speed is:
a. 0m/s
b. about 5 m/s
c. about 10m/s
d. about 20 m/s
e. about 50m/s

a. 0 m/s

A car traveling at a constant speed goes a distance of 3600m in 120 s. What is the car's speed?
a. 30m/s
b. 120m/s
c. 4320 m/s
d. 435000m/s

a. 30 m/s

When something falls to the ground, it accelerates. This acceleration is called the acceleratio due to graity and is symbolized by the letter g. What is the value of g on Earth's surface?
a. om/s^2
b. about 5m/s^2
c. about 10m/s^2
d. about 20m/s^2
e. abou

c. about 10 m/s^2

Heather rides a bycicle 900 m, turns around to face the opposite direction, and rides 1,200 m. What is her total velocity if she rides for 60 s?
a. 5m/s
b. 15m/s
c. 20m/s
d. 35 m/s

d. 35 m/s

If the freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by:
a. 5m/s
b. 10m/s
c. 15m/s
d. a variable amound
e. a rate depends on its initial speed

b. about 10m/s

Modern atomic theory began around 1800 and has gradually changed as new experimental results became available. Which of these describes how new experimental results will MOST often affect existing atomic theory?
a. the existing theory will be replaced by

d. the existing theory will be revised and extended to include new results

Henry Becquerel discovered nuclear radiation while working with phosphorescent materials .These materials, after exposure to sunlight would emit radiation that made an image on photographic film. When he found a material that made an image on filem even w

b. stating a hypothesis to explain unexpected observations

in the absence of air resistance, objects fall at constant:
a. speed
b. velocity
c. acceleration
d. distances each successive second
e. all of the above

c. acceleration

It is said that when Newton saw an apple fall from a tree, it occurred to him that the gravitational force that caused the apple to fall could be the same force that determines the path of the Moon in its orbit aroudn the Earth. His calculatons showed tha

a. validation a theory by using it to explain events

speed is:
a. measure of how fast somethign is moving
b. always measured in terms of a unit of distance divided by a unit of time
c. the distance covered per unit time
d. all of the above
e. none of the above

d. all of the above

A car accelerates at 2m/s^2. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 20m/s?
a. 2 seconds
b. 10 seconds
c. 20 seconds
d. 40 seconds
e. none of the above

b. 10 seconds

You throw a golf ball downward from a roof of a building at a speed of 12m/s. How fast is the ball going after 5 seconds?
a. 0m/s
b. 38m/s
c. 62 m/s
d. 50 m/s

c. 62m/s

You shoot an arrowupwards at a speed of 80m/s. How long will it take for that arrow to reach its highest point?
a. 8 sec
b. 800 sec
c. 0.125 sec
d. none of the above

a. 8 sec

A car travels at a constant speed of 40 m/s. If it travels for 3 s, how far did it travel?
a. 13.3 m
b. 120 m
c. 0.075 m
d. 600 m

b .120 m

_______ is a quantity divided by time.
a. velocity
b. speed
c. acceleration
d. rate

d. rate