Question

A car is
moving
with 30m/s.
How much
it takes
to increase
speed of the car
to
7om/s if
acceleration is 2m/s​

Answer 1

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initial velocity, u = 30 m/s

final velocity, v = 70 m/s

acceleration, a = 2m/s^2

Using the first equation of motion,

v = u + at

=> 70 = 30 + 2t

=> 2t = 40

=> t = 20 seconds

Follow me please.

Answer 2

Answer

initial velocity, u = 30 m/s

initial velocity, u = 30 m/sfinal velocity, v = 70 m/s

initial velocity, u = 30 m/sfinal velocity, v = 70 m/sacceleration, a = 2m/s^2

initial velocity, u = 30 m/sfinal velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,

initial velocity, u = 30 m/sfinal velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,v = u + at

initial velocity, u = 30 m/sfinal velocity, v = 70 m/sacce

final velocity, v = 70 m/s

final velocity, v = 70 m/sacceleration, a = 2m/s^2

final velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,

final velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,v = u + at

final velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,v = u + at=> 70 = 30 + 2t

final velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,v = u + at=> 70 = 30 + 2t=> 2t = 40

final velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,v = u + at=> 70 = 30 + 2t=> 2t = 40=> t = 20 seconds

final velocity, v = 70 m/sacceleration, a = 2m/s^2Using the first equation of motion,v = u + at=> 70 = 30 + 2t=> 2t = 40=> t = 20 secondsFollow me please.