Question

a food package is dropped from a transport plane over Afghanistan; unfortunately, the parachute fails to open. It takes 12 seconds for the package to hit the ground. what height was the package dropped from?

Answer 1

Answer:

Explanation:

uu  

x

​

=30ms  

−1

,u  

y

​

=0ms  

−1

,andh=50m.

h=u  

y

​

t+  

2

1

​

gt  

2

 

⇒  

10

50×2

​

=t  

2

⇒t=  

1

​

0s

Distance (horizontally) covered in t=  

1

​

0s

x=u  

x

​

t=30  

1

​

0m

v  

x

​

=u  

x

​

=30ms  

−1

 

v  

y

​

=u  

x

​

+gt=10  

1

​

0ms  

−1

 

v=  

9000+1000

​

=10  

1

​

9ms  

−1

 

Displacement =  

h  

2

+x  

2

 

​

=  

2500+9000

​

=10  

1

​

15m