A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 meters. Determine the acceleration of the car
how to work. A 78 kg defensive back moving 8.5 m/s tackles a 72 kg receiver moving at 7.5 m/s. what is the post-collision speed immediately after the tackle? Please show work
Two railroad cars,each of mass 7650 kg and traveling 95 km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision?
In a comic book, superman carries a bus (with a bomb on board) up into the air, hovers for a second and then trows the bus over the horizon while he stay hoverin . how does this situation break the law of conservation of motion? what should have happened instead? Why?
a 550 kg car accelerates from 15 m/s to 25 m/s in 15 s by applying a constant force. how large of a force is exerted? Please show work
A cyclist moves at a constant speed of 5 m/s if the cyclist does not accelerate during the next 20 seconds he will travel at?
A dog runs down his driveway with an initial speed of 5 m/s for 8 s, and then uniformly increases his speed to 10 m/s in 5 s. A) what was his acceleration during the 2nd part of the motion? B) how long is the driveway
a rifle bullet with mass 8.00 g strikes and embeds itself in a block with a mass of .992 kg that rests on a frictionless, horizontal surface and it attached to a coil spring. the impact compresses the spring 15.0 cm. calibration of the spring shows that a force of 0.750 N is required to compress the spring 0.250 cm. find the magnitude of the block's velocity just after impact and the initial speed of the bullet.
