A car weighing 1720kg accelerates from 0 km / h to 180 km / h in 5 seconds. Determine the force
| August 7, 2021 | education
A car weighing 1720kg accelerates from 0 km / h to 180 km / h in 5 seconds. Determine the force imparting acceleration to the car.
m = 1720 kg.
V0 = 0 km / h.
V = 180 km / h = 50 m / s.
t = 5 s.
F -?
According to 2 Newton’s law, the force F, which acts on a body, is equal to the product of the body’s mass m by its acceleration a: F = m * a.
Vehicle acceleration a shows how its speed V changes over time t. We express the acceleration of the car a by the formula: a = (V – V0) / t.
The formula for determining the force will take the form: F = m * (V – V0) / t.
F = 1720 kg * (50 m / s – 0 m / s) / 5 s = 17200 N.
Answer: the acceleration is imparted to the car by a force F = 17200 N.
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