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A motorcycle starts from rest and has constant acceleration. In acertain time interval, its displacement triples. In the same timeinterval, by what factor does its velocity increase?
a steel ball is dropped from a buildings roof and passes a window taking 0.115 s to fall from the top to the bottom of
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground
A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.
An object has a kinetic energy of 257J and a momentum of magnitude 21.8 kg·m/s. Find out the speed and the mass of the object.
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
a toroidal selenoid has 500 turns cross-sectional area 6.25cm and mean radius 4.00cma calculate the coils self
Calculate the velocity of the object for an elapsed time of t=1s. Use the formula v=v0+at, these use the v0,and the value for acceleration you determined in previouse step. PROBLEM:V=Vo+at Vo is 3.8 m/s a=1.2m/s^2
question apparent weight a 550-n physics student stands on a bathroom scale in an 850-kg including the student elevator
a square metal plate of edge length 12.0 cm and negligible thickness has a total charge of 7.50times10-6 c. estimate
there s a loop in between two charges. the charge to the left has a value of q. the charge to the right has a value of
A meterstick of negligible mass has a 0.25 kg mass at its 31 cm mark and a 0.40 kg mass at the 77 cm mark. Where should the fulcrum be so the meterstick is balanced
you are conducting an experiment inside an elevator that can move in a vertical shaft. a load is hung vertically from
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