What would happen to earth if it stopped in its orbit around the sun?

it would remain stationary in space

it would crash into the sun

it would be pushed away from the sun

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

If steel is more dense that lake water, why can a boat float

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?