Which of the following will cause acceleration?
a. maintaining constant velocity
b. moving in one direction only
c. the presence of unbalanced forces acting on an object
d. two forces of equal magnitude and opposite directions acting on an object

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?