Physics Introduction Question Preview (ID: 42339)


Introduction To The Forces Unit In Grade 7 Science. TEACHERS: click here for quick copy question ID numbers.

A car travels at 120km/h. What does 120km/h describe?
a) the speed of the car
b) the acceleration of the car
c) the velocity of the car
d) the position of the car

speed describes the rate at which ___________ changes.
a) acceleration
b) distance
c) time
d) velocity

The wind is gusting up to 45 mi/h in a northeasterly direction. The phrase “45 mi/h in a northeasterly direction” describes:
a) the speed of the wind
b) the velocity of the wind
c) the direction of the wind
d) the cause of the wind

Which of the following is an example of an acceleration?
a) car moves at a constant speed
b) car is at rest
c) car covers 10 miles of distance every 10 minutes
d) car speeds up from 0 km/h to 100 km/h in 6 seconds

We calculate speed by:
a) speed = distance x time
b) speed = distance / time
c) speed = time/distance
d) speed=acceleration/time

velocity and speed are
a) the same thing
b) speed is measured in miles/hour and velocity is measured in m/s
c) speed uses time and velocity does not
d) velocity includes speed and direction, speed is just distance/time

acceleration is
a) a measure of how far an object moves divided by the time it takes it to get there
b) a measure of how an objects speed or direction changes
c) a measure of how much force an object experiences
d) a measure of displacement applied over time

an object moving at a constant speed
a) is not accelerating
b) is accelerating
c) can be accelerating if it's direction is changing
d) is decelerating

linear motion is
a) unchanging motion between two points
b) up and down motion
c) back and forth motion
d) continuously changing motion, like how a bumblebee flies

the scientific unit for measuring distance is:
a) miles
b) feet
c) inches
d) metres

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