Find the force that should be applied to an object of mass 8.0 kg to make it accelerate by 20 m/s².

The force required to accelerate an object can be calculated using Newton's second law of motion, which states that force is equal to mass times acceleration.

F = m * a

Where:
F = force (in Newtons)
m = mass (in kg)
a = acceleration (in m/s²)

Given:
m = 8.0 kg
a = 20 m/s²

Plugging in the values:

F = 8.0 kg * 20 m/s²
F = 160 N

Therefore, a force of 160 Newtons should be applied to the object of mass 8.0 kg to make it accelerate by 20 m/s².

The force required to make an object of mass 8.0 kg accelerate by 20 m/s² can be determined using Newton's second law of motion, which states that the force (F) acting on an object is equal to the product of its mass (m) and acceleration (a):

F = m - a

Given:
m = 8.0 kg (mass of the object)
a = 20 m/s² (acceleration)

Substituting these values into the formula, we get:

F = 8.0 kg - 20 m/s²
F = 160 N

Therefore, a force of 160 Newtons (N) should be applied to an object of mass 8.0 kg to make it accelerate by 20 m/s².