Mechanics | Relativity Answers

the instructor drove his car at a steady velocity of 70 mi/h for 2 hours, determine the acceleration of his motion?

a force of 15n streched a spring to a total length of 30cm. an addnitional force of 10n streched the force spring 5cm further. find the natural length of the spring

An athlete takes 2.0sec to reach his max. Speed of 18.0km/h. What is the magnitude. Of his average acceleration.

A golfer takes two putts to sink his ball in the hole once he is on the green. The first putt displaces the ball 5.90 m east, and the second putt displaces it 5.20 m south. What displacement would put the ball in the hole in one putt?

Find the satellite's orbital period

2 cubes (side 1 met) one of relative density 0.6, the other 1.15 are connected by weightless wire and placed in a water tank. In equilibrium, the height of part of lighter cube above water is?

. Show that 90 J of work is needed to increase the speed of
a 20-kg cart by 3 m/s.

Show that 480 W of power is expended by a weightlifter
when lifting a 60-kg barbell a vertical distance of 1.2 m
in a time interval of 1.5 s.

Explain in terms of the conservation of momentum why the ratio of the masses of a bullet and a gun must be carefully considered

a bus travels at 60 km/hr from city a to city b in 2 hours and 15 minutes. what is the distance betweewn a and b?