3. A 1200 kg tranquilized elephant (they are not going to harm it, they just need a blood sample to protect it from disease) is being pulled at a constant speed of 2 m/s
onto a stretcher by a force of 7000 N.
a) Determine the force of friction.
b) Determine the coefficient of friction between the elephant and the ground.

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?