To calculate the change in kinetic energy, we need to use the formula:
ΔKE = KE_final - KE_initial
Given:
Mass (m) = 10 kg
Force (F) = 20 N
Distance (d) = 10 m
First, we need to calculate the work done on the body using the formula:
Work (W) = Force × Distance
W = F × d
W = 20 N × 10 m
W = 200 N·m or 200 J (Joules)
The work done on the body is equal to the change in kinetic energy. So, ΔKE = W = 200 J.
Therefore, the change in kinetic energy of the body is 200 Joules.
A body of mass 10kg and initially at rest us subjected to a force of 20N through a distance of 10m. calculate the change in kinetic energy of the body?
3 answers
A body of mass 5kg moving with a speed of 30m/s-1 is suddenly hit by another body moving in the same direction.thereby changing the speed of the former body to 60m/s-2.what is the impulse received by the first body?
To calculate the impulse received by the first body, we can use the impulse-momentum principle, which states that the impulse experienced by an object is equal to the change in its momentum.
Given:
Mass of the first body (m1) = 5 kg
Initial velocity of the first body (u1) = 30 m/s
Final velocity of the first body (v1) = 60 m/s
To find the impulse (J), we can use the formula:
J = m1 * (v1 - u1)
J = 5 kg * (60 m/s - 30 m/s)
J = 5 kg * 30 m/s
J = 150 kg·m/s
Therefore, the impulse received by the first body is 150 kg·m/s.
Given:
Mass of the first body (m1) = 5 kg
Initial velocity of the first body (u1) = 30 m/s
Final velocity of the first body (v1) = 60 m/s
To find the impulse (J), we can use the formula:
J = m1 * (v1 - u1)
J = 5 kg * (60 m/s - 30 m/s)
J = 5 kg * 30 m/s
J = 150 kg·m/s
Therefore, the impulse received by the first body is 150 kg·m/s.