Acceleration

Question 1

definition of acceleration

Answer 1

is a measure of the increase in speed of a moving object in one second.

Question 2

definition of deceleration

Answer 2

is an object slowing down

Question 3

what is the formula

Answer 3

acceleration =change in speed

time taken

Question 4

what is it measured in

Answer 4

meters per second per second

ms -2

Question 5

what is a

Answer 5

acceleration in ms -2

Question 6

what is u

Answer 6

the starting speed in ms -1

Question 7

what is v

Answer 7

the final speed in ms -1

Question 8

what is t

Answer 8

time in s

Question 9

how do you measure acceleratiion

Answer 9

The instantaneous speed of the trolley can be measured at the bottom of the slope by using the time (seconds) the trolley takes to pass a light gate connected to an electronic timer and the length of the card on top of the trolley (metres). The speed is calculated by using;

-v= length of card
time through light gate

This speed is the finishing speed of the trolley in metres per second (m/s)

These measurements can then be used to calculate the acceleration of the trolley (m/s/s) as it moves down the runway using;

-Acceleration = change in speed
time taken