An asteroid falling towards a planet has a speed of at point

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

An asteroid falling towards a planet has a speed of

20.0\,\text{km s}^{-1}

at point

P

. Ten minutes later, the asteroid is at point

Q

and its speed is

20.6\,\text{km s}^{-1}

. What is the average gravitational field strength between

P

and

Q

? (A)

0.001\,\text{N kg}^{-1}

(B)

0.006\,\text{N kg}^{-1}

(C)

1\,\text{N kg}^{-1}

(D)

6\,\text{N kg}^{-1}