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A bullet of mass 2.90 x 10-3 kg, moving at 1210 m/s impacts a tree stump and penetrates 8.00 cm into the wood before coming to rest. (Take the direction of the bullet to be in the positive direction.)
(a) Assuming that the acceleration of the bullet is constant, find the force (including direction) exerted by the wood on the bullet.
(b) If the same force acted on the bullet and it had the same impact speed but half the mass, how far would it penetrate into the wood?
A football is kicked off at a speed of 24 m/s at 30 degree about the horizontal and lands on the field. What is the horizontal distance from the starting point
An object whose mass is 4 kg is at a radius of r = [ ( -5 i + 3 k ) m ]. Gravity is in the direction of [- j ]. What is the torque produced by gravity
He pulls on a rope that is fastened to the platform and runs over a pulley on the ceiling. Illustrate with what force does he have to pull in order to give himself and the platform an upward acceleration of 1.0 m/s^2?
Lou bets an innocent stranger that he can place a 8.0 kg block against the side of a cart, Find the minimum acceleration for which Lou will win the bet
A weight lifter lifts a 320 N set of weights from ground level to a position over his head, a verticaldistance of 1.85 m. How much work doesthe weight lifter do, assuming he moves the weights at constant speed?
2.00 mol of a monaromic gas at atmospheric pressure has a total internal energy of 7.48x10^3J. What is the volume occupied a rigid cylinder by the gas
a wire of length L has a resistance R if it is cut into three equal lengths that are placed side by side and tightly twisted together, what is the equivalent resistance of the twisted wires
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 410 N and F2 = 376 N. (Assume up and to the right as positive directions.), What is the resultant of these two forces
Light of wavelength 502 nm falls on a diffraction grating whose spacing is 1560 nm. What is the largest order spectrum which can be observed
Suppose you are in a high-speed boat moving at 19.4 m/s directly into approaching 1.07 m wavelength waves. What is the time interval between wave peaks hitting the boat
What is the acceleration of two falling sky divers (mass 116.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight? n?
Decide the speed with the rock is thrown
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