Acarmaker has designed a car that can reach a maximum acceleration of 12 meters/second2. the car’s mass is 1,515 kilograms. assuming the same engine is used, what should the car’s mass be if the carmaker wants to reach an acceleration of 15 meters/second2? use f = ma.
a 1,212 kg
b 1,335 kg
c1,466 kg
d 1,515 kg
d 1,894 kg

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 .