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sattari [20]
3 years ago
6

Tammy leaves the office, drives 34 km due north, then turns onto a second highway and continues in a direction of 35◦ north of e

ast for 79 km. What is her total displacement from the office? Answer in units of km. \ At what angle is her displacement? (C
Physics
1 answer:
Natasha2012 [34]3 years ago
4 0

Answer:

The total displacement is 102 km 51^o north of east.

Explanation:

We can treat this problem as a trigonometric one, so we need to calculate the total displacement on the north and east.

d_n=34km+79km*sin(35^o)=79km

and

d_e=79*cos(35^o)=65km

The total displacement is given by:

D=\sqrt{(79km)^2+(65km)^2}=102km

with an agle of:

\alpha =arctg(\frac{79km}{65km})=51^o

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Answer:

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B) False

C) True

D) True

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Explanation:

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3 years ago
A 148 g ball is dropped from a tree 11.0 m above the ground. With what speed would it hit the ground
forsale [732]

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14.68m/s

Explanation:

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Based on the above information, the speed that hit to the ground is

As we know that

Work to be done = Change in kinetic energy

F ( S) = (\frac{1}{2} ) M ( V^2 - U^2 )

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g h = (\frac{1}{2} ) ( V^2 - U^2 )

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