# Two rockets launched, Find net momentum (1 Viewer)

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#### IDKPhysics101

Two rockets are launched. Rocket A has a mass of 1656.4 kg and a velocity of 5.0 m/s at an angle of 15.9 degrees measured off of the positive horizontal axis. Rocket B has a mass of 1318.7 kg and a velocity of 960.8 m/s at an angle of 42.5 degrees measured off of the positive horizontal axis. Find the net horizontal momentum (in kgm/s) of the two rockets.

#### IDKPhysics101

P=mvcos

Rocket A
p=1656.4*5cos15.9
p=7965.14

Rocket B
p=1318.7*960.8cos42.5
p=934135.51

net p=p1+p2+p3........etc

net p=7965.14+934135.51

NET P=942100.65?

#### Redbelly98

Staff Emeritus
Homework Helper
Looks good, based on the given information. But it seems weird that the two speeds would be so different, you might want to double check that you are using the correct numbers. The first rocket is slower than a running human, while the second one is going nearly 3 times the speed of sound!

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