A car traveling north speeds up from 5 m/s to 25 m/s in 10 seconds. What is the car’s acceleration? (1 point)
A: 2 m/s2
B: 125 m/s2
C: 2.5 m/s2
D: 10 m/s2
halp? im kinda stumped on this one question.
•_•)
thx
M
A dog runs through a field and covers 100 meters in 5 seconds. What is the speed of the dog? (1 point)
A: 500 m/s
B: .05 m/s
C: 20 m/s **
D: 50 m/s
also, I'm not sure about this one ╚(•⌂•)╝
okay thanks!
M
acceleration = (change in speed) / (change in time)
2nd one looks good
To calculate the acceleration of the car, we can use the formula:
acceleration = (final velocity - initial velocity) / time
Given that the initial velocity (u) is 5 m/s, the final velocity (v) is 25 m/s, and the time (t) is 10 seconds, we can substitute these values into the formula:
acceleration = (25 m/s - 5 m/s) / 10 s
Simplifying the equation:
acceleration = 20 m/s / 10 s
acceleration = 2 m/s²
Therefore, the correct answer is A: 2 m/s².