Math Problem Statement
Solution
Let's solve the problem step by step.
Given:
- Height of the table = 82.0 cm = 0.820 m
- Horizontal distance (range) = 96.0 cm = 0.960 m
This is a projectile motion problem where the car is launched horizontally from the table.
(a) Finding the velocity with which the car left the table:
-
Time to fall: Since the car is falling vertically under gravity, we can use the equation: Where:
- (height of the table)
- (acceleration due to gravity)
- is the time it takes to fall.
Solving for :
-
Horizontal velocity: Since the horizontal velocity remains constant during the fall, we can use the horizontal distance (range) to calculate it: Where:
- (horizontal distance)
- is the time calculated in step 1.
(b) Angle of velocity just before impact:
The car has two components of velocity just before impact:
- (horizontal velocity) remains the same as the velocity with which it left the table.
- (vertical velocity) can be calculated using:
The angle can then be calculated using the formula:
Now, let's calculate these values.### Results: (a) The velocity with which the car left the table is approximately 2.35 m/s.
(b) The angle of the car's velocity with respect to the floor just before impact is approximately 59.66° below the horizontal.
Do you need more details on any of these steps or further clarification?
Here are 5 related questions to expand on this:
- How would the results change if the height of the table were doubled?
- What would happen if the horizontal velocity were doubled?
- How does air resistance affect projectile motion?
- Can we determine the speed of the car just before it hits the ground?
- How do you calculate the range of a projectile launched at an angle?
Tip: The angle of velocity upon impact can tell you about the relative magnitudes of horizontal and vertical speeds—if it's closer to vertical, is larger than .
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Math Problem Analysis
Mathematical Concepts
Projectile Motion
Kinematics
Formulas
y = (1/2) g t^2
v_x = x / t
v_y = g t
theta = tan^(-1) (v_y / v_x)
Theorems
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Suitable Grade Level
Grades 9-12
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