acceleration

Question 1

state the definition of acceleration

Answer 1

the rate of change in velocity

Question 2

state the equation(s) for acceleration

Answer 2

acceleration = change in velocity / time

a = (m/s) / s

Question 3

SI unit for acceleration?

Answer 3

m/s^2

Question 4

is acceleration scalar or vector?

Answer 4

vector

Question 5

how do you calculate change in velocity?

Answer 5

final velocity - initial velocity

Question 6

what do you call negative acceleration (an object slowing down)?

Answer 6

deceleration

Question 7

is an object travelling in a circle accelerating?

Answer 7

yes, because it is constantly changing direction

Question 8

what happens to objects near the surface of the earth?

Answer 8

they experience acceleration due to gravity of 9.8 m/s^2

Question 9

as and object’s speed increases, the . . . does too

Answer 9

air resistance

Question 10

does an object that is accelerating must have balanced forces acting upon it?

Answer 10

no

Question 11

state the definition of this ∆ symbol

Answer 11

delta, stands for ‘change in’

Question 12

what is the velocity of an object at rest?

Answer 12

0 m/s

Question 13

which of these is an example of acceleration?
a. a car coming to a stop at traffic lights
b. a car driving over the speed limit at 20 m/s
c. two trains passing each other at different speeds

Answer 13

a. a car coming to a stop at traffic lights