Question

Velocity of car changes from 20m/s to 50m/s on accelerating. time taken in accelerating is 30 sec. find the accerlation and forced applied on car also if mass of car is 2000kg.​

Answer 1

Answer:

intial velocity,u = 20m/s

final velocity,v = 50m/s

time,t = 30sec

acceleration,a = ?

$a \: = \frac{change \: in \: velocity}{time \: taken}$

$a \: = \: \frac{v - u}{t}$

$a \: = \: \frac{50 - 20}{30}$

$a \: = \: \frac{30}{30}$

a = 1m/s²

Force = m × a

$force \: = \: 2000 \times \: 1$

force = 2000N