Question

if a car travel 21s with a velocity changes from 70 M per second to 10 metre per second in 20 second find acceleration ?​

Answer 1

Answer:

a) u=20m/s,

v=40m/s,

t=5s

a= v−ut

=

540−20

= 520

=4m/s 2

(b) Displacement of the car

s=ut+1/2at 2

=20×5+1/2×4×(5) 2

=150m

Step-by-step explanation:

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