A shopping cart (initially at rest) with a mass of 45.0kg is released at a height of 4.2m at the top of the store’s entrance ramp. What is the cart’s velocity at the bottom of the ramp? Don't forget units!

The answer would be d. hope this :

Answer4 million;

Jenny and fred both play a long note on their trombones. a stationary observer hears the sound increasing and decreasing repeatedly in loudness. which of these must be true? the sound waves from the two trombones have slightly different frequencies.the sound waves from the two trombones have the same frequency.the sound waves from the two trombones have slightly different amplitudes.the sound waves from the two trombones have the same wavelength.the sound waves from the two trombones have slightly different velocities.  lolthe answer is          the sound waves from the two trombones have slightly different frequencies.

Answerspread spectrum