Search & Filtering
An 80-kg firefighter slides down a brass pole 8.0 m high in a fire station while exerting a frictional force of 600 N on the pole in the time of?
A basketball player shoots a ball that is at an initial height of 2 m above the ground level at an initial velocity
of 7.5m/s directed at an angle 𝜃0 = 55° above the horizontal. The ball enters the basket hanging at a height
of 3.05 m above the ground level. Answer those questions: 1. Sketch the situation of this problem 2. What is the flight time of the ball from the basketball player to when it enters the basket. 3. What is the maximum height reach by the ball above the ground. 4. At what angle to the horizontal did the ball enter the basket?
Ignore air resistance
A person launches a ball up. The ball left his hand from a height of 1m above the ground level at an initial
velocity of 2m/s upward. 1. Sketch the situation of this problem 2. How long the ball is in the air from the instant it left the man’s hand to the moment it hits the
ground? 3. How high it goes? 4. What is the ball velocity just before it hits the ground?
Ignore air resistance.
You’re flying a toy plane on a string, and it’s going around at 20.0 m/sec, 10.0 m from you. If it accelerates to a final velocity of 30.0 m/sec in 80.0 seconds, what is its angular acceleration?
A boat moves 2.5 m/s north across a river flowing 1.2 m/s east. What is the speed of the boat relative to the shore?
What downward force is exerted on a small piston with a radius of 2.0 cm would lift a 2000.0 kg car if the large piston has a radius of 12.0 cm?
Sam, Choi, Mich, Pia, and Sheen are on a 6’ x 4’ rectangular balsa. They are having trouble in keeping the balsa balanced as they are unaware of their center of mass. Find their center of mass, given the following: Sheen is at 1 foot west of the balsa’s geometric center. She weighs 75 kg. Draw a diagram and locate the points. Show complete solutions
Sam, Choi, Mich, Pia, and Sheen are on a 6’ x 4’ rectangular balsa. They are having trouble in keeping the balsa balanced as they are unaware of their center of mass. Find their center of mass, given the following: Pia is at 4 feet west, and 2 feet south of the geometric center. She weighs 56 kg. Show complete solutions and draw a diagram, locate the points
Sam, Choi, Mich, Pia, and Sheen are on a 6’ x 4’ rectangular balsa. They are having trouble in keeping the balsa balanced as they are unaware of their center of mass. Find their center of mass, given the following: Choi is 2 feet east, and 2 feet south of the geometric center. He weighs 52 kg. Show complete solutions. Locate the points and draw a diagram.
