What is the final velocity of the combined bumper cars
a 225 kg red bumper car is moving at 3.0 m/s. it hits a
stationary 180 kg blue bumper car. the red and blue bumper
cars combine and hit a stationary green bumper car of mass
150 kg. the red, blue, and green bumper cars all combine.
0.93 m/s
1.2 m/s
1. don's
2.7 m/s

B) 1.2 m/s

Explanation:

Collision 1

Mr Ur + Mb Ub = (Mr+Mb) V

225 × 3 + 0 = (225 + 180 ) V

V = 675/ 405

1.67 kg.m/s

Collision 2

(Mr+Mb) V + Mg Ug = (Mr+Mb+Mg) V'

675 + 0 = 555 V'

V' = 1.2 m/s

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.