I NEED SOMEONE TO HELP ME WITH THIS ONE PLEASE!! -Car A that has a mass of 2000 kg is moving at 8 m·s-1 to the west. It collides with Car B that has a mass of
4000 kg moving at 1 m-s-1 to the east. Calculate the velocity of car B, if car A moves with a velocity of 4 m. s-1
After the collision.

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

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)