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Useful Information: g = 9.8 m/s2 1. A car has a uniform acceleration of 12 m/s²,…
Useful Information: g = 9.8 m/s2
1. A car has a uniform acceleration of 12 m/s², to the right. If it has an initial velocity of 20 m/s (also to the right) what is its final velocity after 4 seconds?
2. A hijacker drops an 80 kg chest of gold from an airplane. Neglecting air resistance, how far does the chest fall in 6 seconds?
3. The distance between two objects which exert a gravitational force on each other is doubled. By what factor must one multiply the old gravitational force, (F1) to get the new one (F2) (what is F2/F1?)
4. A water wave has a frequency of 4 cycles/sec and a wavelength of 2 meters. What is the wave velocity?