A rocket is shot from the top of a cliff 300m above sea level with a velocity u at an angle of 45° to the
horizontal.
e
(a) What time does the rocket take to hit a boat after
it has been fired. Take g = 10 ms?
(b) What is the value of 'u' if the rocket hits the boat
4.2km away on the sea.​

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system