Write the expression for the time taken to travel 10 m vertically. h = v; sin 0 × t + g1² Substitute the values. 10 m=(8. 80 m/s) (sin 25. 0°)t + (9. 8 m/s² )r² 4. 9t2 + 3.7t – 10=0

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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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why is it not -9.8 m/s?

also why is it not 8.8sin(-25)?

Write the expression for the time taken to travel 10 m vertically.
h = v; sin 0 x t + gr²
Substitute the values.
10 m=(8. 80 m/s) (sin 25. 0°)t + (9. 8 m/s² )r²
4. 9r? + 3.7t – 10=0
t=1.1 s
Thus, the time taken is 1.1 s.
Transcribed Image Text:Write the expression for the time taken to travel 10 m vertically. h = v; sin 0 x t + gr² Substitute the values. 10 m=(8. 80 m/s) (sin 25. 0°)t + (9. 8 m/s² )r² 4. 9r? + 3.7t – 10=0 t=1.1 s Thus, the time taken is 1.1 s.
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.80 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00
s later.
(a) How far horizontally from the base of the building does the ball strike the ground?
39.8 V
m
(b) Find the height from which the ball was thrown.
104 x
The initial y component of the velocity and the acceleration are in the same direction. m
(c) How long does it take the ball to reach a point 10.0 m below the level of launching?
1.86 x
Note that the initial y component of the velocity and the acceleration are in the same direction. s
Transcribed Image Text:A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.80 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground? 39.8 V m (b) Find the height from which the ball was thrown. 104 x The initial y component of the velocity and the acceleration are in the same direction. m (c) How long does it take the ball to reach a point 10.0 m below the level of launching? 1.86 x Note that the initial y component of the velocity and the acceleration are in the same direction. s
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