Answer:
1.77 m/s^2
Explanation:
There are two forces acting on the car along the direction parallel to the incline:
- The driving force of 10,000 N, which pushes forward
- The component of the weigth of the car parallel to the incline, which pulls backward
The component of the weight of the car parallel to the incline is:
So now we can apply Newton's second law to find the acceleration of the car:
Complete Question:
One simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.5 m/s in 2.24 s, what will be his total time?
Answer:
total time = 6.24 s
Explanation:
Using the equation of motion:
v = u + at
initial speed, u = 0 m/s
v = 11.5 m/s
t = 2.24 s
11.5 = 0 + 2.24a
a = 11.5/2.24
a = 5.13 m/s²
For the total time spent by the sprinter:
s = ut + 0.5at²
100 = 0.5 * 5.13 * t²
t² = 100/2.567
t² = 38.957
t = √38.957
t = 6.24 s
Velocity differs from speed in that velocity indicates a particle's <span>direction of motion.
Therefore, your correct answer is: D</span><span>irection
Good luck with your studies, I hope this helps~!</span>
Answer:
C more than 1 second
Explanation:
it will take time since its 4.9 meters and how hard you throw it down
