Question

At Answer the
the following
list the book mentioned in the passage​

Answer 1

Given:-

Potential Energy ,PE = 850 J

Mass ,m = 50 kg

Height,h = 2 m

To Find:-

Gravitational field strength ,g

Solution:-

Firstly we calculate the acceleration on the planet

• PE = mgh

where,

PE is Potential Energy

m is the mass

g (a) is the acceleration

h is the height

Substitute the value we get

→ 850 = 50×a × 2

→ 850 = 100×a

→ a = 850/100

→ a = 8.5m/s²

Acceleration is 8.5m/s².

Now, Calculating the Gravitational Field Strength

• g = F/m

where,

F is the force

m is the mass

Substitute the value we get

→ g = ma/m

→ g = 50×8.5/50

→ g = 8.5 N/kg

Therefore,the gravitational field strength is 8.5 N/kg.

Answer 2

Explanation:

ANSWER

"From these stone tools we come to know about food and shelters of early man." - this line from the passage supports