Physics, 18.01.2020 00:31 ayoismeisjuam

Aball is thrown upward from the top of a 25.0 m tall building. the ball’s initial speed is 12.0 m/sec. at the same instant, a person is running on the ground at a distance of 31.0 m from the building. what must be the average speed of the person if he is to catch the ball at the bottom of the building?

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 20:50

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?

Answers: 1

Answer

Physics, 23.06.2019 00:50

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n

Answers: 1

Answer

Physics, 23.06.2019 02:40

When doing scientific research ,the sources used should be ?

Answers: 1

Answer

Physics, 23.06.2019 05:30

Oxygen gas enters well-insulated diffuser at 25 lbf/in.2, 420r, with a velocity of 860 ft/s through a flow area of 1.6 in.^2. at the exit, the flow area is 12 times the inlet area, and the velocity is 19 ft/s. the potential energy change from inlet to exit is negligible. assuming ideal gas behavior for the oxygen and steady-state operation of the diffuser, determine the following: (a) the exit temperature, in r(b) the exit pressure, in lbf/in.^2 (c) the mass flow rate, in lb/s

Answers: 3

Answer

You know the right answer?

Aball is thrown upward from the top of a 25.0 m tall building. the ball’s initial speed is 12.0 m/se...

Questions