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BAED-PHYC2121 General Physics 1
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Alex throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s and just after is 3.5 m/s. If the ball is in contact with the floor for 0.050 s, what is the magnitude of the average force applied by the floor on the ball?0%
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4.4 Further Applications of Newton's Laws
A 15-kg block rests on a level, frictionless surface and is attached by a light string to a 10-kg hanging mass where the string passes over a massless frictionless pulley. If g = 9.8 m/s2, what is the tension in the connecting string?0%
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A 7.0-kg bowling ball strikes a 2.5-kg pin. The pin flies forward with a velocity of 3.5 m/s; the ball continues forward at 6.0 m/s. What was the original velocity of the ball?
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A 5.00-g bullet is fired into a 950-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 9.00 cm. What was the kinetic energy of the bullet immediately before the collision?
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At an altitude of 4 times the radius of the earth, the acceleration due to gravity is
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6.4 More Potential Energy Functions
By how much is the energy stored in a Hooke's law spring increased when its stretch is increased from 4.00 cm to 8.00 cm?0%
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A soccer ball (mass = 0.43 kg) is moving at a speed of 20 m/s when it is kicked with a force of 300 N resulting in it going in the opposite direction with the same speed as before. What is the magnitude of the impulse delivered to the ball?
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A tennis ball is held above and in contact with a basketball, and then both are simultaneously dropped. The tennis ball bounces off the basketball at a fairly high speed. This is because:
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Calculate the linear speed due to the Earth's rotation for a person at a point on its surface located at 40° N latitude. The radius of the Earth is 6.40 × 106 m.
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A satellite is in a circular orbit about the Earth at a distance of two Earth radii above the surface. What is the speed of the satellite? (The radius of the Earth is 6.4 × 106 m, and G = 6.67 × 10−11 N × m2/kg2.)
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