How can force-time and force-displacement graphs be used to find the impulse or work done? A. Area under force-time graph & Area under force-displacement graph

B. Area under force-displacement graph & Area under force-time graph

C. Gradient of force-time graph & Gradient of force-displacement graph

D. Gradient of force-displacement graph & Gradient of force-time graph

Plss anybody know how to do this? ? i need the answers from a through d

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.