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iVinArrow [24]
3 years ago
9

A receiver catches a football on the 50.0 yard line and is tackled 5.42 seconds later on the 12 yard line. What

Physics
1 answer:
tester [92]3 years ago
5 0

Answer:

7.01yard/sec

Explanation:

Given parameters:

Initial position  = 50yard

Final position = 12yard

Time  = 5.42s

Unknown:

Average speed of runner  = ?

Solution:

To solve this problem;

        Speed  = \frac{distance}{time}  

Distance covered  = Initial position  - final position  = 50 - 12  = 38yards

So;

       Speed  = \frac{38}{5.42}   = 7.01yard/sec

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A farmhand pushes a 23 kg bale of hay 3.9 m across the floor of a barn. If she exerts a horizontal force of 91 N on the hay, how
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Answer:

W = 354.9 J

Explanation:

Given that,

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We know that,

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4 0
3 years ago
When 2.50 g of a certain hydrocarbon was completely combusted in a "bomb (constant-volume) calorimeter" with a heat capacity (ex
erastovalidia [21]

Answer:

The thermal energy released per gram is 19.2 kJ/g.

(3)  is correct option.

Explanation:

Given that,

Weight of hydrocarbon = 2.50 g

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We need to calculate the thermal energy released

Using formula of thermal energy

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