Asked by Sarah
A 1200 kg car is moving on the freeway at 65 mph. (A) find the magnitude of its momentum and its kinetic energy in SI units. (b) if a 2400 kg SUV has the same speed asthe 1200 kg car, how much momentum and kinetic energy does it have?
Answers
Answered by
bobpursley
on b), twice the mass means twice the momentum and twice the energy.
a) change 65mph to m/s. To check that, put this in your google search window:
65miles/hr in m/s
a) change 65mph to m/s. To check that, put this in your google search window:
65miles/hr in m/s
Answered by
Sarah
so the answer would be 29.05 m/s for a
Answered by
bobpursley
No. That is the velocity. Now compute momentum, and KE.
Answered by
Camille
300 000 = (1/2)M x 20^2 so M = 1 500kg
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