2. A0.5kg football is thrown with a velocity of 15m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.02s. What is the force exerted on the ball by the receiver?

3/185 The 9-kg block is moving to the right with a velocity of 0.6 m/s on a horizontal surface when a force Pis applied to it at time t 0. Calculate the velocity v of the block when t = 0.4 s. The kinetic coefficient of friction is p = 0.3. = Ans. U = 1.823 m/s Vo = 0.6 m/s P, N 72 36 0 0 0.2 t, s 0.4 P Problem 3/185 9 kg H = 0.3

A 3.00-kg object is initially moving northward at 15.0 m/s. Then a force of 15.0 N, toward the east, acts on it for 6.00 s. At the end of the 6.00 s, what is magnitude of the object’s final velocity?

2. A6.0-kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant horizontal force of 12 N. Find the block's speed after it has moved 3.0m.

A 115kg rugby player is initially running at 5.5 m/s in the + direction, but collides with a goalpost and experiences a backward force of 1.71 × 10^4 N for 5.25 × 10^-2 s. what is the final \velocity of the rugby player in the horizontal direction

Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 3.0 x 104 kg (about 30 tons). The rocket engines are shut off, and you're coasting along with velocity of km/s. As you pass the location km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of N for 18 s ejected gases have a mass that is small compared to the mass of the spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about approximations or simplifying assumptions you made in your analysis. Also think about the choice of system: what are the surroundings that exert external forces on your system?) m

1. Ember is sailing a fibre glass fishing boat of mass 1600 pounds and enters a marina at 2.58 m/s [W 25.0° N]. Over a time interval of 4.00 s Ember turned the boat towards a slip and slowed to 1.15 m/s [W 25.0° S]. i. What was the average acceleration of the boat during the parking sequence? Criteria: ii. If the boat hits a deck boat of mass 3000 pounds while parking, how much force will the fishing boat experience? Criteria: