The position of a particule is moving along the x-axis is given by x=7.8 + 9.2t - 2.1t³ where x in meter and t in second
a)what is the velocity at t=3.5
b)is the velocity constant or continuous?
c)what is the displacement of the particle after 3 seconds

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.