1. A 16-kg box starts at rest and speeds up to 20 m/s. By how much did the object's momentum change?

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .

Identify some abiotic characteristics of the tundra biome.