A 2.0 kg box is placed on an inclined plane that forms an angle of 21 ° with the horizontal
What is the force that must be applied in order not to drop the box, without considering the friction?
What is the force that must be applied in order not to drop the box, considering a friction coefficient of 0.078?

Amarble, a bowling ball, a basketball, and a baseball are rolling across the floor at 10 m/s. which one has the greatest kinetic energy? the marble the bowling ball the basketball the baseball

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Which situation will produce the greatest change of momentum