13. A 1 kg mass and 2 kg mass are connected by a string and pass over a smooth pulley as
shown in figure then

i) The acceleration of mass is
(a) 4.66 m/s?
(b) 5.66 m/s?
(c) 6.66 m/s?
(d) 8.76 m/s?
ii) The tension on string is
(a) 8.68 N
(b) 10.68 N
(c) 12.68 N (d) 20.68 N​

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

Gather reliable information to brent make his decision. to gather this information, use newspapers, call insurance companies or look at their web sites, and review consumer magazines and web sites. also, look at the manufacturer web site or for information about gas mileage. list the sources you use and take notes.