2)A particle starts from rest, accelerates for 4 seconds, remains in uniform motion for next 4 seconds and then decelerates for 4 seconds. Plot the acceleration time graph hence draw the velocity time graph of this body?

What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?