A 15kg boulder is going 55 m/s West when it collides with an 8kg bolder going 3 m/s East. They smash together inelasticly. Ignoring friction and heat losses what is their combined velocity after the smash up

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg