Question

A roller coaster car rapidly picks up speed as it rolls down a slope as it starts down the slope its speed is 4 m/s but 3 seconds later ,at the bottom of the slope , its speed is 22m/s .what is its average acceleration ?,

Answer 1

Answer:

the rate of change of velocity per unit of time.

a

=

v

−

u

t

a

=

22 m/s

−

4 m/s

3 s

=

6 m/s

2

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