Answer:
e) Be four times greater
Explanation:
Here we have to use Newton's gravitational law that relates the gravitational force between two objects with their masses (
& 
) and the distance between them (
) in the next way:
(2)
Now if distance between asteroids is halved:
Note that 
because (1) is F so:
It's four times greater!
Answer:
positive, positive
You throw a rock upward. The rock is moving upward, but it is slowing down. If we define the ground as the origin, the position of the rock is positive and the velocity of the rock is positive
Explanation:
Given that the ground is defined as the origin.
The position of the rock is positive since the rock is thrown upward, the position also increases with time until it reaches the maximum height. Also, since the rock is thrown upward with the ground as the origin, the velocity of the rock is positive but the velocity reduces with time (change in height per unit time as the rock moves up is positive)
Explanation:
A train moves at a high velocity. Velocity is the rate of motion, speed or action. An example of velocity is a car driving at 75 miles per hour.
<u>Given</u><u>:</u><u>-</u>
A block of wood measures 12cm x 5cm x 10cm.
<u>To</u><u> </u><u>be</u><u> </u><u>calculated:-</u><u> </u>
Calculate the volume in (i) cm3 (ii) m3
<u>Solution</u><u>:</u><u>-</u>
Case 1 :
Volume of wood = 12cm x 5cm x 10cm
= 600 cm³
Case 2 :
12 cm = 12/100 = 0.12 m
5 cm = 5/100 = 0.05 m
10 cm = 10/100 = 0.01 m
Volume of wood = 0.12 × 0.05 × 0.01
= 0.00006 m³
