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a man in a tree fort 7 m above the ground. He throws a water balloon at a speed of 3m/s at a downward angle of 17 degree below the horizontal at another man 5 m from the base of the tree fort. Does the ball hit the man?
A spacecraft is traveling with a velocity of v0x = 5675 m/salong the +x direction. Two engines are turned on for a time of 847 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 1.25 m/s2,while the other gives it an acc..
A highway curve has a radius of 128 m. At what angle should the road be banked so that a car traveling at 27.2 m/s has no tendency to skid sideways on the road
A car is travelling at a constant speed of 31.1 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration mu..
A 800 kg car is travelling forwards at + 25 m s?1 along a level road. What is the acceleration during skidding
A particle moving along the x xis in simple harmonic motion startsequilibrium position, the origin at t=0 and moves to the right. Find the maximum particle acceleration of the particle
A pipe that is closed on one end is 1.2 meters long. What are its fundamental frequency and its first two overtones? What are its new first and second harmonic frequencies
A ball rolls down a board which is 20 degrees to the horizontal. This time there is a coefficient of kinetic friction of 0.1. What is its speed at the bottom of the board
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown (a) directly forward in one case and (b) directly backward in another
A scuba diver and her gear displace a volume of61.0L and have a total mass of68.0kg. What is the buoyant force on the diver in sea water
A 3.0 cm x 3.0 cm parallel plate capacitor has a 2.0 mm spacing. The electric field strength inside the capacitor is 1.4 x 10^5 V/m
A ball of radius 37 cm is rolling down an inclined plane with no slipping. What is the balls angular acceleration at the bottom of the inclined plane
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground
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