6. (A) A convict escapes through a tunnel and runs at 7.2 km/h. 15 minutes later, the tunnel is discovered and the guards give chase at 10.8 km/h. (4 marks)
(hint: you may need to do a substitution to solve this but there is also a much easier way
hint hint, nudge nudge, wink wink)
(a) How long does it take the guards to catch him, in seconds?
(b) How far is he from prison when he is caught?

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.