1 ô tô đang chuyển động với vận tốc 40km/h thì hãm phanh với gia tốc 1m/s bình phương .Tính thời gian xe dừng lại

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th

Coal contains energy. a. light b. kinetic c. chemical d. mechanical