Cyclist a is moving at 20.0 m/s whereas cyclist b is moving at 12.0 m/s in the same direction and is initially ahead ofa. when they are abreast, they both start to accelerate. twelve seconds later, b overtakes a when b's speed is 36 m/s. what is a's speed at this point?

Explain why you think this diagram shows what happened to the carbon in the biodome.

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.