- #1
linglingpopo
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2) Starting from rest, a car accelerates at 6 m/s2 for 5 s, then continues at a constant velocity for 10 s, then decelerates at -1m/s2.
How fast was it going 0.70 km from where it started?
So, a=6m/s2
t= 5 s
ty= 10s
ay= -1m/s2
.70km converted to m is 700m
Where do I go and did I even set it up right? What equations do I use? I know I'm solving for the initial velocity.
3) A car driving straight off a 10m high cliff lands 20 m away. If the cliff had been 30 m high instead of 10 m, how far away would it have landed?
Looking for displacement on this one
So x= 10m
y= 20 m
Do you use pythagorean theorem or try to find v or what? :(
4) Car A and Car B are traveling at constant velocities in the same direction on the highway. Car A passes Car B at 3:07:00 pm. At 3:08:00 pm Car A starts to decelerate at -1 m/s2. At 3:09:00pm Car B passes Car A.
How much faster was Car A driving than Car B when they first met?
...this one I just don't get. I don't even know how to attempt it
How fast was it going 0.70 km from where it started?
So, a=6m/s2
t= 5 s
ty= 10s
ay= -1m/s2
.70km converted to m is 700m
Where do I go and did I even set it up right? What equations do I use? I know I'm solving for the initial velocity.
3) A car driving straight off a 10m high cliff lands 20 m away. If the cliff had been 30 m high instead of 10 m, how far away would it have landed?
Looking for displacement on this one
So x= 10m
y= 20 m
Do you use pythagorean theorem or try to find v or what? :(
4) Car A and Car B are traveling at constant velocities in the same direction on the highway. Car A passes Car B at 3:07:00 pm. At 3:08:00 pm Car A starts to decelerate at -1 m/s2. At 3:09:00pm Car B passes Car A.
How much faster was Car A driving than Car B when they first met?
...this one I just don't get. I don't even know how to attempt it