Spaces:
Runtime error
Runtime error
| import streamlit as st | |
| st.title("Self Learn Kinematics") | |
| # Display introduction | |
| st.write("If velocity value is positive, the object is travelling to the right.") | |
| st.write("If velocity value is negative, the object is travelling in the opposite direction to the left.") | |
| # State variables to hold input values and results | |
| if 'u' not in st.session_state: | |
| st.session_state.u = 0.0 | |
| if 'v' not in st.session_state: | |
| st.session_state.v = 0.0 | |
| # Input for initial velocity, u | |
| u = st.number_input("Enter the initial velocity (u) in metres per second:", value=st.session_state.u, step=0.1, format="%.1f") | |
| # Input for final velocity, v | |
| v = st.number_input("Enter the final velocity (v) in metres per second:", value=st.session_state.v, step=0.1, format="%.1f") | |
| # Buttons for submitting and clearing inputs | |
| if st.button("Submit"): | |
| st.session_state.u = u | |
| st.session_state.v = v | |
| # Determine the initial direction | |
| if st.session_state.u < 0: | |
| initial_direction = "travelling to the left" | |
| elif st.session_state.u > 0: | |
| initial_direction = "travelling to the right" | |
| else: | |
| initial_direction = "at rest" | |
| # Determine the final direction | |
| if st.session_state.v < 0: | |
| final_direction = "travelling to the left" | |
| elif st.session_state.v > 0: | |
| final_direction = "travelling to the right" | |
| else: | |
| final_direction = "at rest" | |
| # Display initial and final velocities information | |
| st.write(f"Initial velocity (u): {st.session_state.u} m/s means object is {initial_direction} with a speed of {abs(st.session_state.u)} m/s.") | |
| st.write(f"Final velocity (v): {st.session_state.v} m/s means object is {final_direction} with a speed of {abs(st.session_state.v)} m/s.") | |
| # Determine and display the motion description based on the conditions | |
| if st.session_state.u < 0: | |
| if st.session_state.v == st.session_state.u: | |
| st.write("u < 0, v = u") | |
| st.write("Object was initially travelling to the left.") | |
| st.write("Object continued travelling to the left with constant speed.") | |
| elif st.session_state.v < st.session_state.u: | |
| st.write("u < 0, v < u") | |
| st.write("Object was initially travelling to the left.") | |
| st.write("Object continued travelling to the left, accelerated and increased its speed.") | |
| elif st.session_state.v == 0: | |
| st.write("u < 0, v = 0") | |
| st.write("Object was initially travelling to the left.") | |
| st.write("Object continued travelling to the left, decelerated, decreased its speed and stopped.") | |
| elif st.session_state.v > st.session_state.u and st.session_state.v < 0: | |
| st.write("u < 0, v > u and v < 0") | |
| st.write("Object was initially travelling to the left.") | |
| st.write("Object continued travelling to the left, decelerated and decreased its speed.") | |
| elif st.session_state.v > st.session_state.u and st.session_state.v > 0: | |
| st.write("u < 0, v > u and v > 0") | |
| st.write("Object was initially travelling to the left.") | |
| st.write("Object continued travelling to the left, decelerated, decreased its speed and stopped.") | |
| st.write("Object then accelerated and travelled to the right.") | |
| elif st.session_state.u > 0: | |
| if st.session_state.v == st.session_state.u: | |
| st.write("u > 0, v = u") | |
| st.write("Object was initially travelling to the right.") | |
| st.write("Object continued travelling to the right with constant speed.") | |
| elif st.session_state.v > st.session_state.u: | |
| st.write("u > 0, v > u") | |
| st.write("Object was initially travelling to the right.") | |
| st.write("Object continued travelling to the right, accelerated and increased its speed.") | |
| elif st.session_state.v == 0: | |
| st.write("u > 0, v = 0") | |
| st.write("Object was initially travelling to the right.") | |
| st.write("Object continued travelling to the right, decelerated, decreased its speed and stopped.") | |
| elif st.session_state.v < st.session_state.u and st.session_state.v > 0: | |
| st.write("u > 0, v < u and v > 0") | |
| st.write("Object was initially travelling to the right.") | |
| st.write("Object continued travelling to the right, decelerated and decreased its speed.") | |
| elif st.session_state.v < st.session_state.u and st.session_state.v < 0: | |
| st.write("u > 0, v < u and v < 0") | |
| st.write("Object was initially travelling to the right.") | |
| st.write("Object continued travelling to the right, decelerated, decreased its speed and stopped.") | |
| st.write("Object then accelerated and travelled to the left.") | |
| elif st.session_state.u == 0: | |
| if st.session_state.v == st.session_state.u: | |
| st.write("Object was initially at rest.") | |
| st.write("u = 0, v = u") | |
| st.write("Object continued resting.") | |
| elif st.session_state.v > st.session_state.u: | |
| st.write("Object was initially at rest.") | |
| st.write("u = 0, v > u") | |
| st.write("Object accelerated and increased its speed to travel to the right.") | |
| elif st.session_state.v < st.session_state.u: | |
| st.write("Object was initially at rest.") | |
| st.write("u = 0, v < u and v < 0") | |
| st.write("Object accelerated and increased its speed to travel to the left.") | |
| # Clear button | |
| if st.button("Clear"): | |
| st.session_state.u = 0.0 | |
| st.session_state.v = 0.0 | |
| st.experimental_rerun() # Rerun the script to reset the input fields and clear the output | |