An example of an object in projectile motion is
a. a leaping frog. c. riding a bicycle.
b. a game of billiards (pool). d. pushing a shopping car

a. a leaping frog

Explanation: In a projectile motion the object must have a certain path or trajectory with respect to a certain angle. For the leaping frog its velocity can be resolve into components having the final velocity at the highest point to be zero.

A). The frog is the example.

Projectile motion is anything with constant horizontal velocity and accelerated vertical velocity. That's what the frog has, and he doesn't even know it.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.