Shawn threw a hammer down from a roof at 3 m/s. Note that he decided tomake ""down"" positive. How long did it take to hit the ground if it wasmoving at 7 m/s when it hit?

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Determine the maximum r-value of the polar equation r =3+3 cos 0