Recent content by Raimuna

How do we find the acceleration if we don't know the time interval?

Homework Statement Use the impulse-momentum theorem to find how long a stone falling straight down takes to increase its speed from 4.8 m/s to 10.7 m/s. I really don't get the question. How could we find the time in second if we only know the initial and final velocity. Homework...

Homework Statement Two spheres are launched horizontally from a 1.1 m-high table. Sphere A is launched with an initial speed of 4.5 m/s. Sphere B is launched with an initial speed of 1.5 m/s. -What is the time for the sphere A to hit the floor? -What is the distance that sphere A...

I really don't know how to find the acceleration at the intersection. You are driving to the grocery store at 19 m/s. You are 140 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.77 s and that your car brakes with constant acceleration. I have found...