Answer:
95.16 m
Explanation:
L = Range of radar = 7.8 km
= Wavelength = 2 cm
d = Diameter of antenna = 2 m
D = Distance
We have the relation
The smallest distance in meters that two speedboats can be from each other and still be resolved as two separate objects by the radar system is 95.16 m
Answer:21.97 m/s
Explanation:
Mass of truck
Velocity of truck
Mass of car
let be the car velocity and u be the velocity of combined system after collision at angle of
Conserving momentum in east and North direction Respectively
In east Direction
-------1
In North direction
---------2
Divide 1 and 2 we get
Answer:
How to find the maximum height of a projectile?
if α = 90°, then the formula simplifies to: hmax = h + V₀² / (2 * g) and the time of flight is the longest. ...
if α = 45°, then the equation may be written as: ...
if α = 0°, then vertical velocity is equal to 0 (Vy = 0), and that's the case of horizontal projectile motion.
Answer:
1.45m
Explanation:
Detailed explanation and calculation is shown in the image below