Quien gano el mundial de 1998
1 answer:
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Good morning.
We have:
Where j is the unitary vector in the direction of the y-axis.
We have that
We add the vector -a to both sides:
Therefore, the magnitude of b is 47 units.
We have:
Where j is the unitary vector in the direction of the y-axis.
We have that
We add the vector -a to both sides:
Therefore, the magnitude of b is 47 units.
Answer:
a) v = 21.34 m/s
b) v = 21.34 m/s
c) v = 21.34 m/s
Explanation:
Mass of the snowball, m = 0.560 kg
Height of the cliff, h = 14.2 m
Initial velocity of the ball, u = 13.3 m/s
θ = 26°
The speed of the slow ball as it reaches the ground, v = ?
The initial Kinetic energy of the snow ball,
Potential energy of the snow ball at the given height, PE = mgh
Final Kinetic energy of the ball as it reaches the ground,
a) Using the principle of energy conservation,
b) The speed remains v = 21.34 m/s since it is not a function of the angle of launch
c)The principle of energy conservation used cancels out the mass of the object, therefore the speed is not dependent on mass
v = 21. 34 m/s