(c) Determine the magnitude of the velocity of the ball at t = 2.0 s.

The velocity of a particle is given by the equationv = 9t2 i + t3 j + (0.75t + 3) k m/swhere t is in seconds. Determine the following:(a) the magnitude of the particle’s acceleration when t=1.75 seconds, a = Answer m/s2.(b) the magnitude of the particle's displacement when t=1.75 seconds (r=0 when t=0), r = Answer metres.

Alex throws a 0.43-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and just after is 5.5 m/s. What is the magnitude of the change in the ball's momentum?Select one:a.4.3 kgm/sb.5.2 kgm/sc.0.09 kgm/sd.1.0 kgm/s

Calculate the mass of a ball travelling at 2.3 m/s with a kinetic energy store of 2 J.____ kgGive your answer to 2 significant figures.

A particle moves in a circle of radius 2.0 m at a speed given by v = 2t, where v is in ms–1 and t is in second. Find the magnitude of acceleration of particle at t = 1 s.Only one correct answerA.

When S is measured in meters and t in seconds, find the velocity at time t =2 of the motion S = t2 – 3t2A.-4B.27C.3D.-3