Aboy standing on a 19.6 meter tall bridge sees a motorboat approaching the bridge at a constant speed. when the boat is 27 meters from the bridge, the boy drops a stone to the water below. if the stone strikes the water 3.0 meters in front of the boat, at what speed is the boat traveling?
Answers: 1
Physics, 21.06.2019 22:40
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 3
Physics, 22.06.2019 03:00
Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.
Answers: 2
Physics, 22.06.2019 04:50
The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.
Answers: 2
Aboy standing on a 19.6 meter tall bridge sees a motorboat approaching the bridge at a constant spee...
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
History, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
French, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01
Mathematics, 10.09.2020 21:01