An object is thrown off a cliff with a horizontal speed of 10 m/sec. After 3 seconds the object hits the ground. Find the height
1 answer:
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Answer:
The magnification is 0.3
Explanation:
Given:
The focal length of the convex mirror, f = 15 cm
for convex mirror f = -f = -15 cm
The distance of object, u = 35 cm
Height of the object, h = 2 cm
Now, using the mirror formula, we have
where, v is the distance of the image
on substituting the values, we get
or
or
v = -10.5 cm
now, the magnification (m) is given as:
m =
on substituting the values, we get
m =
or
m = 0.3
Hence, the magnification is 0.3
2.6m/s²
Explanation:
Given parameters:
Mass of football = 0.94kg
Force on ball = 2.4N
Unknown:
The acceleration of the ball = ?
Solution:
According to Newton's second law of motion "the net force on a body is the product of its mass and acceleration".
Net force = mass x acceleration
Make acceleration the subject of the expression;
Acceleration =
Acceleration = = 2.6m/s²
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Acceleration brainly.com/question/3820012
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