Question

An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 15m if her initial speed is 3m/s.What is the acceleration due to gravity on the planet?

Answer 1

Step-by-step explanation:

As the astronaut jumps and reaches the highest point, he is momentarily at rest, i.e.

`v=0`

We also know

`u=3, s=15`

By the formula,

`v^2-u^2=2as`

where a is the acceleration of objectc due to gravity,

`0^2-3^2=2a(15)`

`-9=30a`

`a=-0.3 ms^(-2)`

where negative sign indicates a downwards acceleration.