A2.80 kg mass is dropped from a height of 4.50 m. find its kinetic energy(ke) at the moment it is dropped me

Asher cycles 12 miles in 16 hours. what is his speed?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m