a hockey puck slides across the ice at a rate of 11 m/sec and covers a distance of 70 meters. How long does it take the puck to travel 70 meters. also calculate the acceleration of the puck.
time = distance/speed: 70m / 11m/s
constant speed means no acceleration
I assume the puck stopped at 70 meters.
average speed=11/2 m/s
time=distance/avgspeed
accleration:
Vf^2=vi^2+2ad
solve for a
So the difference in Steve's answer and mine is this: did the puck slide 70 meters and stop, or was it still moving at 70 m?
To calculate the time it takes for the puck to travel 70 meters, you can use the formula:
Time = Distance / Speed
Given that the distance is 70 meters and the speed is 11 m/sec, you can substitute these values into the formula:
Time = 70 meters / 11 m/sec
Simplifying the equation gives:
Time = 6.3636 seconds (rounded to four decimal places)
Therefore, it takes approximately 6.3636 seconds for the puck to travel 70 meters.
Now let's calculate the acceleration of the puck. We know that acceleration is the rate of change of velocity, and velocity is the rate of change of displacement over time. In this case, since the speed is constant (11 m/sec), the velocity and acceleration are both zero.
Hence, the acceleration of the puck is 0 m/sec² (zero meters per second squared).