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A. Two balls are hung from cords. The first ball, of mass 1.5kg, is pulled to the side & released, reaching a speed of 2.1m/s at the bottom of its arc. Then, as shown in the figure, it hits & sticks to another ball. The speed of the pair just after the collision is 1.5 m/s.What is the mass of the second ball?B. On a frictionless horizontal air table, puck A (with mass 0.255 kg ) is moving toward puck B (with mass 0.369 kg ), which is initially at rest. After the collision, puck A has velocity 0.118 m/s to the left, & puck B has velocity 0.651 m/s to the right.(1.) What was the speed of puck A before the collision?(Answer in m/s)(2.) Calculate? K, the change in the total kinetic energy of the system that occurs during the collision.C. A block slides down a smooth ramp, starting from rest at a height h. When it reaches the bottom it’s moving at speed Vi. It then continues to slide up a second smooth ramp.At what height is its speed equal to Vi /2?[Answer is h/4, h/2, 3h/4, 3h/2, or 2h]
A horizontal force of 213 N is exerted on a 1.90 kg discus as it rotates uniformly in a horizontal circle (at arm's length) of radius 1.60 m. determine the time for one revolution of the discus. Round the answer to 2 decimal places.
What is distance of a sample of blood from the rotation axis
The coefficient of kinetic friction is 0.50. A horizontal force of magnitude 87 N begins to pull directly on the block. In unit-vector notation, what are the resulting accelerations of (a) block and (b) slab.
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
The springs of a 1600 kg car compress 5.0 mm when its 65 kg driver gets into the driver's seat. If the car goes over a bump, what would be frequency of vibrations.
What is an index of refraction of the liquid
What is the ratio of the amplitude of the damped oscillation
Compute the semi major axis of the star orbit
What is coefficient of kinetic friction
Using Einsteins formula
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
David is driving a steady 28.0m/s while he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant when David passes. How far does Tina drive before passing David.
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