Me! i can’t figure this out and really need .
a rollercoaster car is moving 19.8 m/s on flat ground when it hits the brakes. it decelerates at -3.77 m/s squared over the next 45.8 m how much time does it take?

asthenosphere and convection

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2