an originally stationary car with a mass of 1500 kg reaches a velocity of 15 m/sec 5 sec after starting. what is the cars acceleration? how much force was required to reach this acceleration?
a = (Vf-Vo)/t,
a = (15-0) / 5 = 3 m/s^2.
F = ma = 1500 * 3 = 4500 N.
To find the acceleration of the car, you can use the equation:
acceleration (a) = (final velocity - initial velocity) / time
Given that the initial velocity (u) is 0 m/s, the final velocity (v) is 15 m/s, and the time (t) is 5 s, we can substitute these values into the equation:
a = (15 m/s - 0 m/s) / 5 s
a = 3 m/s^2
Therefore, the car's acceleration is 3 m/s^2.
To find the force required to reach this acceleration, you can use Newton's second law of motion, which states:
force (F) = mass (m) * acceleration (a)
Given that the mass (m) of the car is 1500 kg and the acceleration (a) is 3 m/s^2, we can substitute these values into the equation:
F = 1500 kg * 3 m/s^2
F = 4500 N
Therefore, the force required to reach this acceleration is 4500 Newtons.