We will be using the formulas:
speed=distance/time
time=distance/speed
distance=speed×time
First let's find out Diane's rate of swimming. We can measure this by finding the slope (y/x) of a given coordinate on the graph. One point is (10,15), so you do 15/10=1.5m/s
Now for Rick's rate of swimming, just take a pair of values from the table. 12.5/10=1.25m/s
By the way m/s is metres per second for this
So at a constant speed of 1.5m/s, Diane swam 150m in 150/1.5= 100 seconds, or 1 minute 40 seconds
And at a constant speed of 1.25m/s, Rick swam 150m in 150/1.25= 120 seconds, or 2 minutes.
So the difference between their two times is 20 seconds
Answer:
4.5
Step-by-step explanation:
4x+6 = 6x-3
3+6 = 6x-4x
9 = 2x
X =4.5
Final Velocity = Initial Velocity + (Acceleration * time)
Final Velocity = ?
Initial Velocity = 3
Acceleration = 1.5
Time = 7
Plug in and solve
3+(1.5*7)
3+10.5
Velocity = 13.5m/s
a) is your answer
You need to divide the distance by the time so you can get the yards per second.
5/30=1.666666
1.66666=1 and 2/3
