1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sedaia [141]
3 years ago
7

two projectiles are fired at equal speeds but differentangles. one is fired at an angle of 30 degrees and the other at 60degrees

. The projectile to hit the ground first wil be the onefired at (neglect air resistance)a-30degreesb-60 degreesc- both hit at the same time
Physics
1 answer:
zheka24 [161]3 years ago
8 0

Answer:

a) 30 degree

Explanation:

As we know that time of flight of the projectile depends on the the vertical component of the velocity always

It is given as

T = \frac{2v_y}{g}

now we know that

v_y = vsin\theta

so we will have

T = \frac{2vsin\theta}{g}

since we know that two projectiles are projected at same speed but different angles

so smaller the angle will take smaller time

so it would be 30 degree projectile which will take smaller time

You might be interested in
Which is not an example of work being done?
mezya [45]
C. Carrying a backpack to class
7 0
3 years ago
Read 2 more answers
In this experiment, the_____was intentionally manipulated. This was the independent variable. The dependent variable measured wa
stellarik [79]

Answer:

1.) Fan Speed was manipulated

2.) The acceleration was measured

Explanation:

6 0
4 years ago
Read 2 more answers
When a metal sphere is dropped in to a tall cylinder containing liquid its acceleration is g/2 (gravity over 2). Shaow that : de
Alekssandra [29.7K]

Answer:

Fm is the net force down on the metal in air

Fm / 2 is the net force down on the metal in liquid

Fl is the buoyant force on the metal due to liquid

Fm - Fl = Fm / 2      equating upward and downward forces

Fm / 2 = Fl    

The specific gravity of the metal is twice that of the liquid

Note: F = M g = ρ V g     since ρ = M / V

4 0
2 years ago
A 1.34 kg ball is connected by means of two massless strings, each of length L = 1.70m, to a vertical, rotating rod. The strings
Dennis_Churaev [7]
I think it’s B I’m so right
3 0
3 years ago
Two ice skaters, Lilly and John, face each other while at rest, and then push against each other's hands. The mass of John is tw
seropon [69]

Answer:

Lilly's speed is two times John's speed.

Explanation:

m = Mass

a = Acceleration

t = Time taken

u = Initial velocity

v = Final velocity

The force they apply on each other will be equal

F=ma\\\Rightarrow a_l=\frac{F}{m_l}

F=ma\\\Rightarrow a_j=\frac{F}{2m_l}\\\Rightarrow a_j=\frac{1}{2}a_l

v=u+at\\\Rightarrow v_l=0+\frac{F}{m_l}\times t\\\Rightarrow v_l=a_lt

v=u+at\\\Rightarrow v_l=0+\frac{F}{2m_l}\times t\\\Rightarrow v_j=\frac{1}{2}a_lt\\\Rightarrow v_j=\frac{1}{2}v_l\\\Rightarrow v_l=2v_j

Hence, Lilly's speed is two times John's speed.

4 0
3 years ago
Other questions:
  • A runner moves west with an initial velocity of 4 m/s. She accelerates 3 m/s2 for 30 seconds. The runner's final velocity is
    10·1 answer
  • PLEASE HELP ASAP!!! PLEASEEEEEEE
    13·1 answer
  • When a 600 g mass is suspended from a spring, the spring stretches 1.2 cm. What is the spring constant of the spring? ​
    10·1 answer
  • A runner with a mass of 62 kg running at speed of 0.8m/s ​
    5·1 answer
  • A 2.44×104-kg rocket blasts off vertically from the earth's surface with a constant acceleration. During the motion considered i
    8·1 answer
  • Ay tawaging bayani sa makabagong panahon?
    6·1 answer
  • You walk 12 meters north, then 10 meters west. What is your displacement
    6·1 answer
  • Rudy plans to conduct an experiment using three rosebushes of the same variety and size. His hypothesis is that the plant
    5·1 answer
  • Complete this concept map about types of waves.
    14·1 answer
  • The four tires of an automobile are inflated to a gauge pressure of 2.02×10^5 Pa. Each tire has an area of 217 cm^2 in contact w
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!