Answer:
B
Explanation:
Because blocks 2 and 3 have sides with unequal forces while block 1 doesnt. Plz drop a follow if this helps! ❤
Answer:
Accelrtation:a vehicle's capacity to gain speed within a short time.EX:An object was moving north at 10 meters per second.
Velociy:the speed of something in a given direction EX:Velocity is the rate of motion, speed or action. An example of velocity is a car driving at 75 miles per hour.
Explanation:
Angle of projection: 28 degrees or 62 degrees
Explanation:
A projectile consists of two independent motions:
- A uniform motion along the horizontal direction
- A uniformly accelerated motion along the vertical direction
From the equations of motion, it is possible to derive an expression for the range of a projectile, which is:

where:
u is the initial speed
is the angle of projection
is the acceleration due to gravity
For the projectile in this problem, we have:
d = 15 km = 15,000 m is the range
is the initial speed
Solving the equation for
, we find the possible angle:

Which gives two values of the angle:

Learn more about projectile:
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Answer:
a. A dissipative interaction permits a two-way conversion between kinetic and potential energies.
FALSE
in dissipative type of forces energy is not conserved so it is not possible
b. A nondissipative interaction permits a two-way conversion between kinetic and potential energies.
TRUE
in non dissipative type of force there is no energy loss so we can use energy conservation
c. A potential energy function can be specified for a dissipative interaction.
FALSE
Here potential energy is not defined for dissipative type of forces
d. A potential energy function can be specified for a nondissipative interaction.
TRUE
negative gradient of potential energy is equal to non dissipative type of forces
