For Sept. 24, Friday

@Physics

.LT about impulse and momentum and stuff after that

.HW

1. what is the momentum of a 15 g sparrow flying with an initial speed speed of 12 m/s to the east? if the sparrow increases its speed to 14 m/s in the same direction, what is the impulse of its force?

2. calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1000kg/s with a speed of 60,000 m/s (at take off)

3. A 900 kg box car travelling at +20 m/s strikes a stationary second car. After collision, the box car stops and the second car travels with a velocity of +30 m/s. What is the mass of the second car?

@Chem

.LT == moved to monday. same coverage (gases)

.HW (supposedly tomorrow due)

@SocSci

HW (supposedly tomorrow due)

@Math4

HW (supposedly tomorrow due)