Question

Question 1 (1 point) A car moving with an initial velocity of 100 m/s south has a constant acceleration of 10 m/s2 north. After 6 seconds its velocity will be 60 m/s south 40 m/s north 160 m/s north O40 m/s south

Answer 1

Initial velocity , l=100m/s South acceleration, a = 10 m/s2 - North acceleration is opposite to the motion of the car. that means the Cago moving with .. - retardation Cal. But the direction of motion still in the south. final relocity after time t= 65. - u -at (100 - 10 6 ) mis -40 mys], South Radius of the vertical circle, r= 100m mass of the stone, m= 2:00 kg velocity at the top, u= 4 oomis from the free body diagram at the top - Ting = more Tension , ta mol-mg = 2* (412_ 2x9.8 124 N g-9.8 m/s2 93 1. In all type of collision momentum is always conserved. But kinetic energy is not always conserved. In inelastic Collision there is a loss of kinetic energy, and mass is also always conserved. Impulse = force x time & KIE= Force x displacement - Work done 1 Impulse & kafe are different physical quantity. They cannot be equal. 1. An elastic collision is one in which Kinetic energy & momentum are both conserved. gu m=0.50kg, K: 8000 w/m xe = 3.5cm = 0.035m Total energy = K.E +PE = 'mo²+ fare2 = 0.12 ► mol = 0-122 - k*2 = 0.1242 -80 x(0.0392 0.502 = 0.142 * 02 = 0.284 ☆ U = 0.53 mys - 53 emys]