PLEASE HELP QUICKA ball with a mass of 1.5 kg rolls into a stationary 3.0 kg ball with an initial velocity of 5.0 m/s. If the first ball stops after colliding, how fast does the
second ball move?
O 1.7 m/s
0 2.5 m/s
O 0.9 m/s
O 7.5 m/s

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer