Question

What force is needed to a accelerate a 60 kg
wagon from rest to 5.0 m/s square in 2.0 seconds?
(a) 100 N
(b) 120 N
(C) 150 N
(d) 130 N​

Answer 1

Given:-

• Initial velocity ,u = 0m/s

• Mass ,m = 60kg

• Final velocity ,v = 5m/s

• Time taken ,t = 2 s

To Find:-

• Force ,F

Solution:-

Firstly we calculate the acceleration of the wagon .

Acceleration is defined as the rate of change of velocity at per unit time.

• a = v-u/t

a is the acceleration

v is the final velocity

u is the initial velocity

t is the time taken

Substitute the value we get

→ a = 5-0/2

→ a = 5/2

→ a = 2.5m/s²

Acceleration of wagon is 2.5 m/s².

Now, Calculating the Force

Force is the product of mass and acceleration.

• F = ma

where,

F is the Force

m is the mass

a is the acceleration

Substitute the value we get

→ F = 60 × 2.5

→ F = 150 N

Therefore,

The force needed to accelerate the wagon is 150 Newton.

Hence, Option (C) is the required answer .

Answer 2

Explanation:

150

please mark as brainlist