Physics ?? ?? ??
Solution:- Initial velocity (u) = 50 m/s
Final velocity (v) = 0 m/s (since the pebble is finally coming at rest)
Time taken (t) = 5 s
Retardation (a) = ? (to be calculated)
By using the first equation of motion,
v = u + at
0 = 50 + a * 5
- 50 = 5a
a = -10 m/s2 (negative acceleration means retardation)
Final velocity (v) = 0 m/s (since the pebble is finally coming at rest)
Time taken (t) = 5 s
Retardation (a) = ? (to be calculated)
By using the first equation of motion,
v = u + at
0 = 50 + a * 5
- 50 = 5a
a = -10 m/s2 (negative acceleration means retardation)