After skiding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +1.5 m/s. Miranda runs after her at a velocity of +4.2 m/s and hops on the inner tube. How fast do the two of them slide across the snow together on the inner tube? Ashley's mass is 48 kg, and Miranda's is 77 kg. Ignore the mass of the inner tube and any friction between the inner tube and the snow.

3.16m/s

Explanation:

Mass of Ashley = 48 kg

Mass of Miranda = 77 kg

u1 = 1.5 m/s

u2 = 4.2 m/s

m1u1 + m2u2 = (m1 + m2)v

v = m1u1 + m2u2 / m1 + m2

So v = (48x1.5 + 77x4.2) / (48+77)

= 3.1632

= 3.16m/s

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get