Aparticle moves along the x axis according to the equation x = 6t², where x is in meters and t is in seconds. therefore:
a. the acceleration of the particle is 6 m/s²
b. t cannot be negative
c. the particle follows a parabolic path
d. each second the velocity of the particle changes by 9.8 m/s
e. none of the above

What is the momentum of a 2 kg object moving at 15 meters per second

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.