Posted by **Sarah** on Monday, June 22, 2009 at 2:06pm.

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?

- Physics -
**bobpursley**, Monday, June 22, 2009 at 2:29pm
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

- Physics -
**Sarah**, Monday, June 22, 2009 at 2:45pm
so the answer would be 29.05 m/s for a

- Physics -
**bobpursley**, Monday, June 22, 2009 at 4:31pm
No. That is the velocity. Now compute momentum, and KE.

- Physics -
**Camille**, Sunday, November 11, 2012 at 2:13pm
300 000 = (1/2)M x 20^2 so M = 1 500kg

## Answer This Question

## Related Questions

- physics - a 2646lb car is moving on the freeway at 69 mph. (a) Find the ...
- Physics - A car of mass 1100 kg, moving with a speed of 73 mph on a highway, ...
- physics - a 1200kg car is moving on the freeway at 30 m/s. (a) Find the ...
- physics - I have a couple physics questions I need help with please! If you ...
- Physics... URGENT !!!! - A 66.7-kN car is travelling at 66.5 mph when the driver...
- Physics - A 76.3-kN car is travelling at 68.7 mph when the driver decides to ...
- Physics HW Help, Please - A 76.3-kN car is travelling at 66.5 mph when the ...
- Physics- impuse and force - A car is moving to the right with a speed of 20 m/s...
- Physics Momentum - 1) Two 1 kg balls move away from each other, one traveling 5 ...
- physics - How do i find this? A shooting star is a meteor that burns up when it ...

More Related Questions