Question

A 2 kg car accelerated from 10 m's to 20 m/s using a force of 3000N. How quickly did it

Answer 1

Answer:

the car accelerates in

$\frac{1}{150} \: or \: 0.006 \: second$

Explanation:

here's the solution : -

we know,

=》

$force = mass \times acceleration$

=》

$acceleration = \frac{force}{mass}$

=》

$a = \frac{3000}{2}$

=》

$a = 1500$

so, acceleration = 1500 m/s^2

now,

=》

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

here, a = acceleration, v = final velocity,

u = initial velocity, t = time taken.

So,

=》

$1500 = \frac{20 - 10}{t}$

=》

$1500 = \frac{10}{t}$

=》

$t = \frac{10}{1500}$

=》

$t = 0.006 \: sec$