Anthony and sissy are participating in the roll-a-Rama roller skating dance championship while 75.0kg Anthony roller skates backwards at 3.0m/s 60.0kg sissy jumps into his arms with velocity of 5.0m/s in the same direction

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) determine the magnitude and direction of projectile velocity at t= 1.3s b) determine the magnitude and direction of projectile acceleration at t=1.3s

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?