A:No way.
B:Why not?
C:Really?
D:No matter.
一物体做匀变速直线运动,某时刻速度的大小为4m/s,1s后速度的大小变为10m/s,在这1s内该物体的( )
已知∠A=65°,则∠A的余角是____ .
____ ____ are from a small city.