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A roller coaster is moving at 25 m/s at the bottom of the hill. 3 seconds later it reaches the top of the hill and 10 m/s. What is its acceleration?
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
A train starts from rest and moves to a speed of 25m/s in 30 seconds. Calculate the accleration.
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
Does your speedometer measure instantaneous or average speed?
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
Sam is driving down the HWY at 150m in 10 seconds. What is his velocity?
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
A lizard accelerates from 2m/s to 10 m/s in 4 seconds. What is its acceleration.
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
George walks to a friend’s house. He walks 750 meters North, then realizes he walked too far. He turns and walks 250 meters West. The entire walk takes him 13 seconds. What is his velocity?
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
A car accelerates from 10m/s to 50m/s in 4 seconds. Calculate the acceleration.
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
A person runs for 5 km in 10 minutes, then stops for 3 minutes, then runs another 2 km in 3 minutes. What is their average speed.
10m/s/s
instantaneous
76.92 m/s NW
.4375 km/min
2 m/s/s
-5m/s/s
15 m/s South
.83333m/s/s
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