A projectile is launched at 20 m/s at an angle of 30o above the horizontal. Two...

Question

Question

A projectile is launched at 20 m/s at an angle of 30^o above the horizontal. Two seconds after the launch:

a. How fast is the object traveling?

b. In which direction is the object traveling (defined as an angle with respect to the horizontal).

science physics

Answer 1

Answer #1

Ans =

The velocity of the projectile after 2sec

Since there is no force acting in a horizontal direction so

horizontal velocity = initial horizontal velocity = V_H= 20* cos 30 =17.3 m/s

The direction of object = tanθ = V_V / V_H = ( 20sin 30 - 10*2) / 17.3

tanθ = -0.57

θ = - 29.63 degree down from horizontal

Answer 2

Similar Homework Help Questions

A projectile is launched with a launch angle of 70° with respect to the horizontal direction...

A projectile is launched with a launch angle of 70° with respect to the horizontal direction and with initial speed 53 m/s. How long does it remain in flight?
A projectile is launched with an initial speed of 40 m/s at an angle of 25°...

A projectile is launched with an initial speed of 40 m/s at an angle of 25° above the horizontal. (a) What are the horizontal and the vertical components of initial velocity. (b) Find the time taken by the projectile to reach the highest point and its height at the highest point. (c) How long does it take the projectile to hit the ground after launch and how far from the starting point it hits the ground. (d) Calculate the velocity...
A projectile is launched at an angle of 60° from the horizontal and lands 98 s...

A projectile is launched at an angle of 60° from the horizontal and lands 98 s later at the same height from which it was launched (a) What is the initial speed of the projectile (in m/s)? m/s (b) What is the maximum altitude (in m)? (c) What is the range (in m)? (d) Calculate the displacement (in m) from the point of launch to the position on its trajectory at 90 s. (Express your answer in vector form. Assume...

A projectile is fired at an angle of 30o above the horizontal and is initially travelling...

A projectile is fired at an angle of 30o above the horizontal and is initially travelling at a rate of 3.9 m/s, what is the initial horizontal component of its velocity in m/s?
#8 Projectile Motion A projectile is launched from a height of 11.2 meters above a perfectly...

#8 Projectile Motion A projectile is launched from a height of 11.2 meters above a perfectly flat horizontal surface with a launch speed of 20.5 m/s and a launch angle of 30° with respect to the horizontal direction. Using g = 9.8 m/s, how long is the projectile aloft? O A. 1.23s B. 1.54 s ° C. 229 s D. 2.88 s #9 Projectile Motion In #8, what is the range of the projectile before it strikes the ground? O...
A projectile is launched at an angle of 16.0° above the horizontal. What is its initial...

A projectile is launched at an angle of 16.0° above the horizontal. What is its initial speed if it hits a target that is located a horizontal distance of 150 m from the launch point and 12.0 m above the launch level?

Problem 7 4.A projectile of mass 9.6 kg is launched from the ground with an initial velocity of 12.4 m/s at an angl...

Problem 7 4.A projectile of mass 9.6 kg is launched from the ground with an initial velocity of 12.4 m/s at an angle of 54° above the horizontal (see the figure). At some time after its launch, an explosion splits the projectile into two pieces. One piece, of mass 6.5 kg, is observed at 1.42 seconds after the launch to be at a height of 5.9 m and at a horizontal distance of 13.6 m from the launch point. Find...
A projectile is launched at an angle θ above the horizontal. Three seconds later the projectile...

A projectile is launched at an angle θ above the horizontal. Three seconds later the projectile is moving the same angle θ below the horizontal. Which of the following (actual values with units, not just algebraic symbols) can be found from the information given? a. the initial vertical component of the projectile’s velocity b. the initial horizontal component of the projectile’s velocity c. the initial magnitude of the velocity d. None of the above since at least one of the...
A projectile is launched at an angle θ above the horizontal. Three seconds later the projectile...

A projectile is launched at an angle θ above the horizontal. Three seconds later the projectile is moving the same angle θ below the horizontal. Which of the following (actual values with units, not just algebraic symbols) can be found from the information given?

A projectile is launched from ground level at 32.7 m/s at an angle of 25.4 °...

A projectile is launched from ground level at 32.7 m/s at an angle of 25.4 ° above horizontal. Use the launch point as the origin of your coordinate system. (a) How much time elapses before the projectile is at a point 3.9 m above the ground and heading downwards toward the ground? (b) How far downrange (the horizontal distance from the origin) was the projectile when it reached the highest point in its flight?