1. A car speeds up. Which claim about the forces acting on the car must be true? a. There are no forces on the car.
b. There is no net force on the car. .
C. There is not enough information,
d. There is a net force on the car.

What is the approximate amplitude of this wave a.10 seconds b.15 centimeters c.30 centimeters d.15 seconds

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.