Adriver in a car traveling at a speed of 21.8 m/s sees a cat 101m away on the road. how long will it take for the car to accelerate uniformly for 3.2 km in 3.5 min. how fast (in m/s) is the car moving after this time?

What are similarities and differences between refraction, reflection, diffraction and absorption?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.