You are at a red light in your car. the red light turns green, and you take your foot off the brake and step on the gas pedal, without turning the steering wheel. the speedometer changes from to in seconds. in those seconds, did the car change velocity? is that an acceleration

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

If forces acting on an object are unbalanced. true or false