What is crystal how we can obtain bigger crystl

Modify the equation fδt=δ (mv) to find the force of friction.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is