Question

Bob is roller-skating at a speed of 1.5 m/s relative to the ground. He tossed a small ball forward. The ball moves at a speed of 1 m/s relative to Bob. What is the speed of the ball relative to the ground?

Answer 1

If you really want an expert to help you, be sure to follow directions and type your <u>subject</u> in the <b>School Subject</b> box. Any other words, <u>including obscure abbreviations</u>, are likely to delay responses from a teacher who knows that subject well.

Answer 2

Subject: Physics
Velocity-addition formula gives
v= 1.5 +1 = 2.5 m/s

Answer 3

Elena is right but, why to make a physics question in the foreign language subject?