Question

For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 56 N acts on a certain object, the acceleration of the object is 7 /ms2. If the force is changed to 32 N, what will be the acceleration of the object?

Answer 1

The acceleration of the object is 4m/s^2

Explanation:

Step one:

given data

Force F= 56N

Acceleration a= 7 m/s^2

mass m=?

we know that from the first law of motion

F=ma

m=F/a

m=56/7

m=8kg

Step two:

having found the mass

m=8kg

the new force F= 32N

the new acceleration is

F=ma

a=F/m

a=32/8

a=4m/s^2

The acceleration of the object is 4m/s^2