ive been laboring over these two problems:(adsbygoogle = window.adsbygoogle || []).push({});

A 4050 kg rocket is traveling in outer space with a velocity of 126 m/s toward the Sun. It needs to alter its course by 23.2°, which can be done by shooting its rockets briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a speed of 2270 m/s relative to the rocket, what mass of gas must be expelled?

and

A uniform 6.53 m long ladder of mass 14.9 kg leans against a smooth wall.The ladder makes an angle theta = 19.5° with the ground and the ground is rough.

+Calculate the magnitude and direction (relative to ground) of the force exerted by the ground on the ladder at its base.

+determine the minimum angle at which the ladder is not to slip when a 69.9 kg person stands three-fourths of the way up the ladder. The coefficient of static friction is 0.5.

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# Homework Help: Calculate the magnitude and direction physics

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