A helicopter traveling with a velocity of 30.2 m/s is at an angle of 30.8° to the ground. Find the horizontal component of the plane's velocity.

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

True or false: the revolution of the earth creates day and night as it rotates around the sun

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .