Answer:
v = 10.84 m/s
Explanation:
using the equation of motion:
v^2 = (v0)^2 + 2×a(r - r0)
<em>due to the hammer starting from rest, vo = 0 m/s and a = g , g is the gravitational acceleration.</em>
v^2 = 2×g(r - r0)
v = \sqrt{2×(-9.8)×(4 - 10)}
= 10.84 m/s
therefore, the velocity at r = 4 meters is 10.84 m/s
Hello!
The velocity function is:

a) 2.3 s earlier, we can make
t = -2.3 s, in relation to our initial time:

b) Now we can make
t = 2.3 s:
Answer:
a
Explanation:
how well a material shines or reflects light
Answer:
1845.26 ?
Explanation:
18.46 × 99.96= 1845.2616 = 1845.26
im not entirely sure though
An insulator which is also called a 'dielectric'.