A child riding a bicycle at 15 meters per second accelerates at -3.0 meters per second2 for 4.0 seconds.
What is the child’s speed at the end of this 4.0-second
interval?

Which seasons are the northern and southern hemispheres experiencing in the image? it is summer in both the northern and southern hemispheres. it is summer in the northern hemisphere and winter in the southern hemisphere. it is winter in both the northern and southern hemispheres. it is winter in the northern hemisphere and summer in the southern hemisphere.

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

Hydrogen and helium are both members of?