In a physics lab experiment, a 6 kg box is pushed across a flat table by a horizontal force F. If the box is speeding up with a constant acceleration of 0.18 m/s^2, what will be the magnitude of F?

we need to know the time interval during which the force acts. impulse of force = momentum change

it doesn't. it was imagined up in the middle ages.

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.