For a moving object, the force acting on the object varies directly with the object's acceleration. when a force of 18 n acts on a certain object, the acceleration of the object is 6 /ms2. if the acceleration of the object becomes 8 /ms2, what is the force?

Which is an equation for the nth terms of the sequence 12,15,18,21

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

What is the area of the trapezoid shown ?