How fast is the cannonball going when shot a balloon
A cannonball shot with an initial velocity of 140 m/s at an angle of 60° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is the cannonball going when it hits the balloon?
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A 218-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.900, and the l
The pulley system shown in the figure is used to lift a 61kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.9 m/s2 . Ass
An object with mass 3.0 kg is attached to a spring with spring stiffness constant and is executing simple harmonic motion. When the object is 0.020 m from its equilibrium position, it is moving with a speed of .55. What is the maximum velocity?
A charge of 5.42 μC is at the origin and a second charge of -2.54 μC is on the positive x-axis 1.00 m from the origin. Find the magnitude of the electric field at a point P on the y-axis 0.589 m from the origin. The value of the Coulomb cons
A capacitor has a charge of 36 μC. The potential difference between the conductors is 400 V. What is the capacitance? Answer in units of nF. Please show all work on how to solve this problem to get to the answer so I can see the cancelations an
A weightlifter raises a weight with an acceleration of 2 m/s2. If the net force exerted on the weight is 316 N, what is its mass?
Leroy, who has a mass of 120 kg, is skateboarding at 9.0 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s. (a) What is the deceleration?
What is the magnitude and direction of the car's acceleration as it slows down?
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