Answer:
Velocity
Explanation:
x-t curve means position vs time graph in which position (x) is in x-axis and time is in y-axis.
Slope of a graph = 
.
We know that, velocity = displacement/time
or we can say that slope = displacement/time = velocity
Hence, the correct option is (b) "velocity".
Answer:
To lift the object it takes 117.6 N m of work.
Explanation:
Given data:
m = mass of the object = 4 kg
h = high = 3 m
Question: How much work, W = ?
The work:
Here
g = gravity = 9.8 m/s²
Answer:
120 N
Explanation:
F=ma therefore 60kg times 2m/s^2 is 120 N
If there was no friction the car will continue to move at a constant speed in a straight line.
