Question

A car travels from rest with a constant acceleration a for t seconds. What is the average speed of the car for its journey, if the car moves along a straight road?​

Answer 1

Answer:

Correct option is

C

v=

2

at

Initial speed of car u=0

Distance covered by car in t seconds is given by second equation of motion,

S=ut+

2

1

at

2

⟹ S=

2

1

at

2

(∵u=0)

Average speed of car =

total time

total distance

v

avg

=

t

S

=

t

2

1

at

2

=

2

at

So option C is correct.

Answer 2

Answer:

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Explanation:

or bato