Question

If a car is accelerating at a rate of 20 m s-2 with a force of 10000N ,its mass is
Options A.200kg B 500kg C. 200000kg D.9980kg answer

Answer 1

Answer: option (b)

Step-by-step explanation:

F = ma

Given, a = 20ms-² , F = 10,000N

So,

10,000 = m × 20

m = 10,000/20

= 500 kg.

Answer 2

The mass of the car is 500kg. And option 'B' is correct.

Given:-

Acceleration of the car = 20m/s²

Force = 10000N

To Find:-

The mass of the car.

Solution:-

We can easily find out the mass of the car by using these simple steps.

As

Acceleration of the car (a) = 20m/s²

Force (f) = 10000N

Mass of the car (m) =?

According to the second law of motion,

f = d(mv)/dt

on taking mass constant,

f = m dv/dt

and, differentiation of velocity gives acceleration,

so,

$f = m \times a$

on putting the values,

$10000 = m \times 20$

$m = \frac{10000}{20}$

$m = \frac{1000}{2}$

$m = 500kg$

Hence, The mass of the car is 500kg. And option 'B' is correct.

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