help with physics pleasee?
The acceleration due to gravity on the moon is 1.6m/s^2(down). if a baseball was thrown with an initial velocity of 4.5m/s(up). what would its velocity be after 4.0s??
- JimLv 79 months agoFavorite Answer
v = gt + v₀
v = (-1.6m/s²) (4.0s) + 4.5m/s
note: gravity is negative for down, initial velocity is positive for up.
v = -6.4 + 4.5
v = -1.9 m/s so in a downward direction
note: 2 decimal places (always check sigfigs last)
- MyRankLv 69 months ago
Acceleration due to gravity (g) = -1.6m/sec²Initial velocity (u) = 4.5m/secFinal velocity (v) = ?Time (t) = 4secUsing kinematic relation:-v = u + gt= 4.5m/sec + (-1.6m/sec²) x 4sec= 4.5 m/sec - 6.4m/sec = -1.9 m/sec∴ final velocity (v) = -1.9m/sec.Source(s): http://myrank.co.in/
- electron1Lv 79 months ago
Use the following equation.
vf = vi + a * t
vf = 4.5 + -1.6 * 4 = -1.9 m/s
The negative sign means the baseball is moving down.
- 9 months ago
1.9 m/s downwards