Suzanne bikes 3 km to school every day. it takes her 20 minutes because she always has to stop at a traffic light. what is her average speed?
a. 0.15 km/s
b. 3 m/s
c. 6.7 km/minute
d. 9 km/h

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?